Hi CL,
I started with a boat trailer that required extensive rebuilding in order for it to work for my tear (at least the way I wanted it to work). After cutting apart the trailer and rewelding it, buying new parts to rebuild the hubs and springs, and replacing the coupler, I think I would have been better off starting from scratch.

I should have sold the boat trailer and used the money to by parts for the camping trailer.
A number of people have built on smaller and newer boat trailers that didn't require nearly the amount of work mine did, so for them it was a great decision. Mine really needed more work and parts than it was worth.
Can you start with a pickup bed trailer? Sure. Is it going to be the cheapest and most time efficient? Doubtful.
If it were me, I'd keep the pickup bed trailer for a utility trailer and start with something new for the tear.
Just my .02 worth.
Joanne
ChaseLounge wrote:We were given a 1967 Chevy Pickup bed trailer, and have removed the bed. This was free of charge. It is approximately 6' wide, which we like.
The only problem is, the pickup was rear-wheel drive and the axle is huge and heavy. I will need to replace the axle and wheels (because they are tube tires).
We can get a 48"x96" trailer from Harbor Freight for $199.99 with no shipping because we live only 30 miles from Springfield and can pick it up.
(1) Any suggestions on which would be the better option?
(2) And, if we get the 48" wide trailer, can the teardrop extend 6 inches on each side of the trailer, making it 5 feet wide?