Ok I have looked every place i can think of and I can't find the answer anyware, so I sory in advance if this is a well known thing. I got a Solcat 18 for free from my uncle, but it has some soft spots in the hulls. I did a whole lot of reading all over the internet as well as here about how to fix hobie cat hulls, but when I started the process of drilling my holes for the resin, i found that solcats do not have a double hull. is this correct? am I just seeing things, and if not how do i go about fixing the hulls? This boat is older, last time it was licenced was 1982. I don't want to scrap it, i got almost everything for it. My Dad also has the same boat with the same problems, just not as bad as mine. anything you guys think will help would be a huge help as I am just lost. thanks