B,
Maybe you shouldn't have let go of that Solo~Right when you got rid of the other boat.

The mast head float will keep you from going turtle. And it will keep you from taking on water in the mast if there are holes in the mast that would otherwise drop into the water when the float is not there.
But keep in mind, that the mast head float does add weight 28' from the cross bar; that is a lot of leverage.
The first time we Solo~Righted a Hobie 21 we had a mast head float with a crack in it that took on some water.
THAT was difficult!
GARY