any ideas on bldg/buying a boom crutch also usable for rad..

Are we sure we are using the correct term here..

IMHO. A boom crutch is just a vertical pole with a cradle end to receive the
boom. Usually some kind of strap to keep the boom in place. The whole crutch
would be removed and stored when not in use.

Then there is the Gallows which is a perminent metal and wood frame that
reaches across the aft end of the cabin trunk or even over the cockpit. This
usually has a centerline notch, port and stbd notch for the boom to rest in.

The gallows could make an effective support for a Bimini but I can't imagine
how you could use it for a radar since the boom would hit the radar..

Steve
s/v Good Intentions