Gelcoat Crack

[Kliwks]

I have a small 1 1/2" crack in the gelcoat near the bottom right corner near my bedroom slide. It looks like someone tried to seal it before, but it has worn off. I would just like to coat it with something to keep any moisture out and keep it from getting worse.
Ideally would like something that would flatten out. I don't want a big wad of sealer. That wouldn't look very nice.

Thanks for any tips you may have.

[Luckiest Dreamer]

I suspect that you do not have Gel coat, although you definetly have a crack in your fiberglass. The best thing you can do is fix it properly. The crack, as in a windshield will continue over time to become longer. Putting a stop to it is in order and I would do it by taking a drill at the very end(just a tiny bit beyond) and drill a small hole. Then I would take my dremel tool and grove the crack like a small V along the length of it. I would use west systems or a similar product and follow the directions on how to repair the crack. After the repair is completed go to NAPA or a similar operation that can match the color of your project and have them mix up some and put it in a spray can. Paint and walk away happy and satisfied. Our you can get a tube of caulk and apply as best you can and then walk until you need to reapply the caulk.

[Algoma]

As said you need to grind that out and apply a good epoxy filler. I use the following Marine Tex, epoxy resin, adhesives, silicone grease, engine treatment, cleaner, repair, bond, fill, seal, fiberglass, aluminum, plastics, Starboard, wood

[jesilvas]

I've seen so many crack around slide outs.
But if some people don't want to fix it with gelcoat, etc., we sore a straight line in the direction it's going, get a piece of trim to match the rest, putty it and secure/seal it up.