> my system may be specific to my weight. If I were to put my
> feet in the straps, I'd sink the tail of the board too much
When I'm overpowered, I waterstart with my feet in the straps. Since the sail
is tilted to windward as you come out of the water, the sail and not the board
will be supporting your weight, so you won't sink the tail. By the time your
sail is vertical, you'll be planing.
When I have to resort to this, it's usually time for me to rig a smaller sail.