All:
I finished redoing the trailer with the new sail tube. The most fun was sandblasting the steel. I chose the middle of summer with 90+ degree days to start sandblasting. I was sweating so much my goggles would fog up so I couldn't see what I was sandblasting. Taking them off was too painful, so I would blast in 5 minute intervals... blast for 5 mins, wait for goggles to clear for 5 minutes, on and on.
Although I haven't weighed the final sail tube assembly, I would guess it is well over 100 lbs. I bought a 2x10 pressure treated and cut out a recess so they can act as cradles to the pipe. I bolted the cradles to the cross members using 1" wide by 3/16" thick steel bar I got from Home Depot. I also used galvanized pipe strapping from Home Depot to attach the pipe to the cradles. I configured the sail tube so that it slopes downward so that any water that gets inside while launching, drains while driving down the road.
I built a large metal basket on the front of my trailer. I had to reduce it's width so that the sail tube would fit along side of it. The basket is great because I can put wet boots, wetsuits and vests in the basket to keep them out of the truck.
Here are some pictures.


I need to take some pictures of the simple door assembly I made.