Theres about a 2 inch gash in the gelcoat on the hull of my black/red/white 2007 rxt. The guys at sport-mann said I needed gel coat paste. I looked and there seems to be just gel coat paste and then theres gel coat paste with hardener and resin and a bunch of stuff in kits. I'm only 19 and haven't done anything like this, what is easiest, decently prices, and what would you recommend. Should I just go to my boat store and grab some of their gel coat?Please help, thank you!