Mark and Ken have given you some great tips here.
Only thing I can add is for you to try to "step over" the leaned all the way back rig
rather than shifting your weight forward enough to sneak you front foot around in front of the mast base.
Try it, it works and your board will stay planing much further through your tack as it's shifting your weight forward that takes the board off plane and sinks the nose.
If you can "step over" and never get your weight up near the mast foot, you can then do exactly what Ken and Mark are suggesting.
I tack an iSonic 111 all the time at 180 lbs.
Hope this helps,