My back leg gets tired from all that toeside riding.
Take your back foot out of th strap and place it closer to the front foot and toes nearer the upwind rail. THis will even out your weight, lower the nose of you board and take the load off your back foot. Better upwind etc.
Gybing is easy enough to do but it's more fun to slash a turn than dick around with swapping feet.
Swap your feet before you turn and you can slash the turn as fast and tight as you want
Most important get good at toeside both ways.
Also if there isn't monster chop and ditch the straps!
Regarding mutants... the biggest advantage is being able to reverse away from trouble in a beat.
However quick footwork on a strapless is just as fast.
One aspect of mutants that I don't like is the locked in position of the straps.
Very bad for boards that require more edging and more power to ride... hence stress on the knees. However the rotating strap system that came out recently would fix that.