Guests - If You want access to member only forums on FM. You will gain access only when you Sign-in or Sign-Up on Fishing Minnesota.

It's easy - LOOK UPPER right menu.

Sign in to follow this  
Followers 0
Milkdud

Mounting downriggers?

7 posts in this topic

What would you guys/gals out there suggest I use to mount downriggers to my boat? I have the cannon swivel bases already but the sides of my boat are just a thin aluminum sheet and I feel I need to put something under that to screw the swivel bases into....correct? It doesn't seem like the aluminum sides of my boat would be strong enough if the ball of the downrigger got caught on something. Any suggestions?

Share this post


Link to post
Share on other sites

Is this a flat gunwale or are you talking the aluminum sides of the boat with a rounded lip on top. I have mounted them on boats with a gunwale, and I have put marine grade plywood with a 1/8" aluminum plate with holes that match up with the swivel bases. Make the "underside" hardware as big as possible in order to distribute the torque of the downrigger itself and the extra torque if you get snagged up. We have snagged up the Cannon downriggers in the past and the boom bent before the gunwale gave out.

Share this post


Link to post
Share on other sites

Yes my boat has the flat gunwale sides that you mentioned about 8-10 inches wide. Do most hardware stores carry aluminum plates and marine grade wood?

Share this post


Link to post
Share on other sites

They should carry the aluminium plates (needing to cut to size) and I'm not sure with the marine grade plywood. My dad had a chunk of it when I used it. That may be overkill since it should be out of the elements, and you ought to be more than fine with green treated plywood. I normally do everything to an overkill level. I also recommend stainless fasteners and locknuts for sure. I put locknuts on wherever possible due to the vibration.

Share this post


Link to post
Share on other sites

Do not use green treated with aluminum. The old treated was fine but the new treated of the past couple of years reacts with alum and will corode it. I mounted my riggers with just a 1" piece of plywood under the aluminum (top inside of storage box and rod locker so no rain hits it). I then used silicone where the bolts come thru. I have had no problems at all.

Share this post


Link to post
Share on other sites

You might also want to look at a track system for your boat. Than you can slide the downriggers/rod holders out when not in use.

Share this post


Link to post
Share on other sites

Use a backer as suggested. A 1x8 pine board will work. You'll want to get this as wide as possible and into the corners of the gunwale. Use SS fender washers and locknuts & bolts.

Share this post


Link to post
Share on other sites
Guest
This topic is now closed to further replies.
Sign in to follow this  
Followers 0



  • Posts

    • merc
      What do you think Smurfy? No answer maybe we better send out a search party.
    • AlwaysFishing23
      A good ice fishing suit ( ice armor, striker gear etc) or waders just put layers underneth. That's what I would do.
    • Jonny 2 shot
      I hear ya on the ice safety.  I am trying to plan appropriately for possibly fishing in 3-6" of standing water.   Thanks guys!    
    • Royal_Dutchman
      Hey guys!  Just started the a topic discussion for the Rainy River Conditions.  I did check the river today and there is some open water east of Birchdale Landing and posted some pictures of that Landing and Franz Jevne.  Thanks!
    • Royal_Dutchman
      February 23rd, 2017:
         I went and checked the river just before 9:00 am this morning.  The river is open just east of Birchdale with only a narrow spot open.  East of Franz Jevne (about 2 miles east of Birchdale) the River is almost completely open with some shore ice.  The temperature was 19 degrees and it looks like we are suppose to stay below freezing until Sunday with a high of 32 degrees and then it will get cold again.  It is hard to say how the river will open this year with cold weather coming again but here is what it looked like this morning.  Depending on the weather we may not go and check the river again until Monday sometime.   Where you can see pavement is the Birchdale Landing and the other access is at Franz Jevne: