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RoyBoy1256

how do you calculate depth from shore?

3 posts in this topic

I was wondering how you would guesstimate the depth of water when you cast out a slip bobber rig? I thought about putting 4-5 ft of line, set the bobber there, then add a clip weight to the jig, throw it out and see if I could still see the bobber. I know they have those little green conraptions you can put on your line, then read the depth off your wristwatch they give you, but want to keep it simple. Anyone have an idea of how to cast out the slip bobber and calculate the depth? Thx for any ideas...

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First of all, welcome to FM. We look forward to future posts from you.

As for calculating the depth from shore, I think your first idea is right on track.

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take a really heavy jig, cast it out. take your best guess to the distance that you threw it, call that distance "y" after is sinks, and tighten the line against the jig on the bottom. you can measure the height of your rod/line above the water. measure the angle in your line with a protractor. the vertical distance down to the jig will be sin (angle of your line down from the horizontal) = the vertical jig depth divided by the length of line that you casted out less the height of your rod above the surface of the water. x = vertical distance down, y = the hypotonuse and theta = the angle. sin (theta) = (x/y)- line height above the water. or, if you dont have your scientific calculator and protractor with you, you could just do what you mentioned first. tongue.gif

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  • Posts

    • NorthwoodKing

      Posted

      2011 Alumacraft 165cs, fully loaded, Musky rods/reels, spinning rods/reels, hundreds of musky lures, walleye cranks, tackle

      Abu Garcia Revo Toro 60 5.4:1 $175
      Shimano Calcutta 400TE $250
      Shimano Curado 300EJ $200
      Shimano Tekota 500LC $150
      Daiwa Lexa 300 HS-P $200

      St. Croix Mojo Musky 8' Med-Heavy Split grip $100
      St.Croix Premier 8'6" Heavy $125
      St.Croix Premier 8' Heavy - glass/graphite $125
      Thorne Bros. C Series Custom 8'6" Heavy $175
      Fenwick Elite Tech 7"6" Heavy - jerkbait/twitchbait $125


      St. Croix Avid 6'6" Med - spinning $75
      St. Croix Premier 6' Med -- spinning $75
      St. Croix Premier 7' Med -- spinning $75
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      St. Croix Premier glass/graphite Moderate -- trolling $75
      Fenwick Eagle 6'6" Med Fast -- spinning $75

      Pflueger President Spinning reel #6730 $60
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      Bristol Village 102nd & Bush Lake Road Bloomington - Saturday October 1st 8 a.m. - 3 p.m.

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    • hoppe56307

      Posted

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    • HunterFisher11

      Posted

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    • redlabguy

      Posted

      Andy,

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    • BringAnExtension

      Posted

      Zach-

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      We have never made it to Devils Lake, but it is on my personal bucket list just because of the possibility of those monster perch.

      Six years ago, we ended up back on Red and no longer consider any other option.  Here's why:

      • This fishing is good.
      • The Petrowske family are wonderful hosts.
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      Now, I don't know how that you translate to your running portables, but I have never been disappointed with our trips to URL.

      Hope that helps.

    • CaptJohnWis

      Posted

      Headed UP NORTH.

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      Posted

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    • curt quesnell

      Posted

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  • Posts

    • NorthwoodKing
      2011 Alumacraft 165cs, fully loaded, Musky rods/reels, spinning rods/reels, hundreds of musky lures, walleye cranks, tackle

      Abu Garcia Revo Toro 60 5.4:1 $175
      Shimano Calcutta 400TE $250
      Shimano Curado 300EJ $200
      Shimano Tekota 500LC $150
      Daiwa Lexa 300 HS-P $200

      St. Croix Mojo Musky 8' Med-Heavy Split grip $100
      St.Croix Premier 8'6" Heavy $125
      St.Croix Premier 8' Heavy - glass/graphite $125
      Thorne Bros. C Series Custom 8'6" Heavy $175
      Fenwick Elite Tech 7"6" Heavy - jerkbait/twitchbait $125


      St. Croix Avid 6'6" Med - spinning $75
      St. Croix Premier 6' Med -- spinning $75
      St. Croix Premier 7' Med -- spinning $75
      St. Croix Premier 6' Med lite Fast -- spinning $75
      St. Croix Premier glass/graphite Moderate -- trolling $75
      Fenwick Eagle 6'6" Med Fast -- spinning $75

      Pflueger President Spinning reel #6730 $60
      Pflueger President Spinning reel #6730 $60
      Pflueger President Spinning reels #6925 $70
      Daiwa Sealine SG17LC3B $75


      Bristol Village 102nd & Bush Lake Road Bloomington - Saturday October 1st 8 a.m. - 3 p.m.
    • hoppe56307
      I am JACKED UP, we leave for North Dakota tonight, scout all day tomorrow and blast first thing saturday morning.  
    • HunterFisher11
      Going to be coming up to nam and kab for last open water fishing for the year, just wondering if any one has been out and any luck?? And any pointers on where to try and presentation?? Thanks!! 
    • redlabguy
      Andy, Two 22's is fun. I fished a few Frazer spots yesterday with the same poor results. Places that had fish (28-30' off rocky points) before our storms and wind came up empty. I'm with CT, hoping more stable weather will improve the catch. In fact I think I'll go out and try it right now. Dick
    • BringAnExtension
      Zach- I have been making annual ice fishing trips with friends for about 12 years ago.  We have tried LOTW, Mille Lacs, Red and one other lake that happened to be where we could use a free cabin for a weekend.  With that one exception for the free cabin, we have also rented sleepers. We have never made it to Devils Lake, but it is on my personal bucket list just because of the possibility of those monster perch. Six years ago, we ended up back on Red and no longer consider any other option.  Here's why: This fishing is good. The Petrowske family are wonderful hosts. No other resort that we have used has come close to being wonderful hosts.  They just didn't put any effort into it. Now, I don't know how that you translate to your running portables, but I have never been disappointed with our trips to URL. Hope that helps.