"Bowgus" wrote in message
...
Maybe make a "cradle" type structure with the pipe/elbows threaded
together
(maybe you have a buddy that's a plumber?) to match your trailer width,
and
bolt that (Ubolts) to the trailer.

I would like to make my own boat guides, preferably from regular water
pipe (say 2" pipe).



I have an aluminum girder trailer. I drilled some holes in the alumunum, got
some hard nylon gaskets and attached the usual uprights and brackets with
stainless steel hardware. The plastic gaskets isolate the aluminum from the
stainless steel. Four years of frequent salt water dunks and no corrosion or
rust at these fittings.