Originally Posted by
JAWallace
I don't think you have a 1999 170 Montauk as the first model year of the 170 was 2002. Could it be a Montauk 17, the classic hull?
There are two ways to properly fill holes, and one cheat way; I used all three. For anything small (3/8" or less) below the waterline, I only use Marine Tex, which is an epoxy putty. For anything larger, epoxy resin is the best choice. Once dry, you can grind it down slightly then apply gelcoat if you wish, then sand 80-200-1200, polish and wax. Marine Tex is a pretty good match for Whaler white though. Topsides, if I have to create a fastening surface and have nothing under the deck to hold the fasteners, I'll create a larger cavity below the deck to adhere to the foam, fill with epoxy resin, then drill pilot holes and use only stainless sheet metal screws.
For non critical holes above the waterline that have no chance of allowing water intrusion into the core, especially if I'm feeling lazy, I'll sometimes do a temporary fix with 3M 4200 which is a polyurethane sealant. I have several of those that will get replaced with epoxy resin and gelcoat later. After about 30 holes, I got burned out filling them and wanted to get on the water for awhile. For any fasteners, like for the trolling motor which I had to lag into the foredeck, I always coat them with 4200. I rarely use 5200 which is permanent; 4200 is removable.
NEVER, EVER, use silicone for anything on a boat! The previous owners did, and it took me nearly a month to remove it. There's only one chemical that works, and it's expensive and needs repeated applications. Silicone is miserable stuff, and not a proper sealant for marine use.
I could write an entire thread on the iPilot, and I'm still learning it. One of the reasons I have always preferred a pontoon over a boat when feasible is the ability to hold your position while casting to a target. The iPilot is just as good with the anchor feature which, with the push of a button, tells your motor to use the built in GPS and hold the boat in position. It is perfect for bass fishing or hovering over structure or an underground spring. You can also tell the motor to follow a course, and it will allow for wind drift while doing that, and correct. The wireless remote allows you to control the motor from anywhere in the boat. It's so worth the cost, one of the most helpful accessories I've ever had. I would call it essential for our type of fishing. Because of that motor, I'll use the skiff more than the pontoon now. I love the simplicity of the pontoon, but love having tunes, beer, food, gear, rods, room to laze out for a break or a swim, and the ability to scoot when I want to.
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