Do you have a repair manual? If not get one. Do each step suggested above, plus drain your tank and in the early spring fill with fresh fuel. You might smile after doing the suggestions above. I read and followed them and this year my 115 is running great.
I'm done. 30s and wind time to put it away. Canvas on winterized and behind the barn for the winter. I'll bank fish some of the rivers for salmon for a couple months.
Tanner, you're going to need at least a hand written bill of sale listing the person you get it from name and address, how much your paying and and the date. HIN will make things a lot easier on you. If you try the salvage route good luck. The SS are quite the sticklers with this stuff.
You changed the balance and put you and the outboard at the stern. Take someone with you or put some weight over half way to the bow. Move the weight forward each trip until you're satisfied
Don't use the rubber junk, everyone has told you. I just put all new rollers on this trailer. The long rollers were black poly all others are the yellow. I got mine from Eastern Marine. Only because they had just what I needed and I didn't have to look for parts at other places. Mine were...
The Optronics are good, think that's what I have in the barn for this trailer. They'll all leak eventually, all of them are cheap plastic whether sealed or not. Bang or bump them once and it might leak.