I get that you paid for shark hide but why is the line a big deal. I guess I see it all the time and don’t pay attention. When in water you don’t see it. Does it hurt resell? I am looking at pontoons because I want less waxing and upkeep of an I/o bow rider. I spend so much time cleaning after use it actually seems to be more than usage. Of course everyone is gone when it’s time to clean. Do you have to wipe down toons after use? My dad never did on his but he has a lift.
If your pontoon will sit in the water, it will first develop a water line/discoloration on the pontoons, but will also start to accumulate grim/algae, etc. Discoloration, if not protected, happens fast. The grim buildup will impact speed significantly over time. How quickly it builds up depends on the type of water it sits in.
If on a lift or trailer, and if you clean and wipe them down periodically, they might discolor at the water line a bit, but probably not have build up or grim. If you Sharkhide or ceramic coat the pontoons, and periodically wipe them down, they will look shinny and new for a long time - particularly if on a lift or trailer.
I’m on my THIRD summer with the pontoon and Sharkhide from delivery. My pontoons look really good. They could probably use a wipe down, but NO build up, and only the slightest of discoloration under the water line. I’ve NEVER wiped them down - not once. But it has always been kept on a lift the first two years, and now up out of the water on its Sea Legs when not in use.
Will grime build up or discoloration affect resale? Sure. If I were buying used, I would ONLY be looking for something in pristine condition. For others, it wouldn’t matter at all so long as they are on the water as cheaply as possible. Dirty toons are a huge eyesore, and a real pain to try to clean back up once it happens. As a result, it is hard for me to imagine it not having a decent impact on resale value.