Re: gel-coat fixxins????
Yes what you're seeing is a clear coat with sun damage. Here is what you can do. Get some 320 - 400 Gritt wet/dry sand paper and a spray bottle of water. Spray the water on the affected area and sand the affected area. This will "break" the line. At this point you have two options, 1) wipe it clean use a bit of polish and a buffer (lightly) buff it and call it a day. (note that you no longer have a clear coat over this section of gel coat but understand it is not nessecary to have clear coat over your gel coat. in fact I dont recomend it at all because gel coat is much tougher than clear coat and can withstand many more years of buffing to bring back the shine.) OR 2) If you wish to spray clear coat over that area, continue to wet sand about 1-1.5 inches past the affected area lightly in a jagged design (this is called feather edging), clean with a prep solution and spray your clear coat over the affected area and blend.
Again I would just remove the "ugly" from the boat, that clear coat is going to continue to blister and it is just easier to do a quick fix. someone probably cleared over the gel coat because either the gel coat was thin or they lacked knowledge on buffing a gel coat. Enjoy