Take off v brackets. Mount two 2x12x12s to center on outer toons, and you're done. I would say 3 2x12s but some pontoon companies hang the middle pontoon lower which could cause a problem. Or, you can call a local dock co, and they'll do it for you for two to three thousand $$$$$!
I've got to convert mine as well. I was given the same 2x12 by a local marina. I guess I have a dumb question, whats the best way to attach those to the steel beams? I'm not sure I have a drill that can get through the steel its pretty thick. Is there some other way?
Mine are steel made for lifting way more than a pontoon which is fine just got to figure out how to attach wood. Brackets may be the way to go though I haven't found any that would work yet. I've read that a hole in steel beam like this doesn't impact its structural integrity just cant figure out how to drill a hole in this.
Call Lunmar Boat Lifts, they can tell you the parts you need and ship them to you. Very reasonable and helpful. I bought my lift from them and I have tritoon with all toons supported. The center toon is larger than the others. 800-965-8544.
Yeah, my 2x12s sag too. Go to a boat show or dealer showroom and take a look at what their boats are sitting on. They stick a piece of foam under each end and they'll have 10-20 people standing around in the boat....these suckers are well built. I've had my tritoon for about 9 years with the center toon unsupported and I load the passangers while the boat is on the lift.....no problems.