Hi, I've got a 14' Chevy Cadet with an 8 inch gash in the keel line just below the waterline. I have a fibreglass repair kit and am not so worried about how it will look (as its below the waterline) but the thing that confuses me is that there seems to be 1/2 inch gap in between the fibreglass and the actual floatation in the boat. Should I use a filler here? If so what kind?<br /><br />For anyone that can help me, I have very detailed digital pics I can email you right away so you can understand the situation better.<br /><br />Thanks so much guys, this is an amazing site...