And then there's the "universal to all sails" throttle.
Ease your sheeting angle a little and you get less power.
If you "sheet out" suddenly, this upsets the balance of everything (rig, sailor, board, fin), often resulting in a "yard sale".
However "easing" your sheeting angle slightly just reduces the power.
Set your harness lines up so that the rig "eases" automatically by placing the rear harness line attachment slightly forward of truly neutral and you get this "easing" just by releasing a little with your back hand.
I don't think you need to worry about the Hucker taking you into unwanted orbit somewhere high above the water, or taking you on a magic carpet ride to some speed never before attained on a windsurfer.
I can assure you that you will either ease the sheeting angle, or bail out, long before either of the above hypothetical eventualities.
Hope this helps,