since you are mainly trailoring local to launch site, i would keep rudders on but if its a long haul take them off. here is a pic of my mast bracket, its fast and easy to use.
go to members albums and click on "prindle 16 hull repair and paint" find this pic and click on it a second time for a closer look(larger image). note 1/2" line tied around rudders and castings to keep rudders up during trailoring.
--
Check out "Prindle Sailors" on Facebook!
bill harris
hattiesburg, mississippi
prindle 16- "BLUE RIBBON"
--