hi all. I have a guy that wants me to put new fuel lines on his boat, and it is a 2000 triton tr19 sf, and I cant figure out how to get to the tank? I tried removing the seat and it is solid fiberglass ? the seat back has no access? I can see the hose it goes under the rear seat but like I said I took seat out and its solid fiberglass? I cant figure it out? he has no manual, I just need to know how to get to the tank please thank you