What size is your boom . you could use a U-100 aliance rotor they have
a 1"5/8 hole throgh. You can find them on ebay for say 40-50 -or
less. Make a T on the mask pipe and mount the rotor on it side use
the clamps to the T and walla. roll it over vertial or horizonal a
very easy fix only need 3or 4 wire to make it work . also u can
insert a 15/8" in the middle of the boom .. pin it well if the boom is
2" or more .. 73 Ralph