Dave:

I used 1 1/2 inch pipe from a electrical supply place. EMT I think, but not sure of the exact name. I haul my 17 with no problem. Send Danny a PM he is trying them on a 14 and a Getaway. That should be a good test.

Doug Snell
Hobie 17
Soon to be Mystere 4.3
www.tcdyc.com