Hello I bought this boat over the winter and did not seem to notice any blisters the boat was stored on a lift before I got it and the boat did sit in the water at some time when the lift broke. I have used the boat several times this summer and I have noticed these blisters showing up over time. I do not keep it in the water. It seems more are showing up as the weather gets hotter. They are only along the edges on the stern highed in the picture. Am I in big trouble? Im out of pocket alot for the boat and I cant send several more thounds of dollars, hopefully this will be a diy kinda thing.