Hi Howard, David
usually i kept both boards down going up-wind and one down on half-wind course. Usually did not do the effort to lower/raise after each tack.
The rubber band was fixed, pulling the board down. I newer released that one except for the winter storage. For raising the board there was a 1:2 block.
. . . .
yes you are right - the pivot-base draged in the water sometimes. With picking up some debris i did not have issues, maybe also because the water is quite clean where i sail. I rarely had the case to pickup smth either with the rudders or outboard.
Regards, Primoz