I have an old 14 foot cruise craft runabout and I need a new trailer. I just spent $800 last year on new rollers, springs, rims, wheels and tiers. The frame needs some work now. I thought I could just weld a new frame up and use the parts I got last year. Any idea on the dimensions of steels to use. I thought of using 150 C style beams for the middle. Is that over kill? Would be grateful for any help.