Sounds like your current challenge is pitch control.  It comes pretty quickly.  As far as mast placement, it is correct when your weighting is equal between both feet (legs) while foiling at steady state.  As you get more comfortable, you might find a longer strut helpful.

Mike,

I completely agree with Phil about you getting the pitch control. Do you have access  to a boat or jet ski go to behind.  Or even go rent one of those Lift efoils for 2 hours.  This way you could focus specifically on the foil for an hour or two without having to deal with the wing.  It would give you the muscle memory to feel the foil.  What I mean by that is not actively thinking to have your feet in a specific spot for each specific point where your foil is mounted.  You will know that you need your feet in a specific area, yes.  But as soon as you are  flying you will immediately know to adjust this foot a little here or there.

I have probably about 15-20 sessions wing foiling. But when i started winging, I did not have to think about the foil. I knew how to fly it from riding behind the boat.  I had to just control my speed after the excitement of "WOOOHOOO i am flying....really fast now.....spat."  Did that a few times before I realized the gas pedal was in hands.

I have probably taught about a dozen people to foil behind my boat.  I start them by telling them to have their in a specific spot. But I immediately follow that up with they will have to learn the feel of too much or too little lift once they start flying  by usually adjusting their front foot a little here or there.  After a few minutes they understand what i am saying.

When I have moved my foil front or back to adjust for wind conditions, I do not have to actively know I am putting my front foot on a particular spot. I just start flying and adjust on the fly.  If it jumps out of the water, then I throw my weight forward to get it back on the water. It is easier to that than adjsut on the fly. Then relaunch. But If I am to far forward, then it is just as easy to crap walk that foot back without missing a beat.

I can fly...! flat water 13knots 6m ensis. Lots of 100-200m flights and even ended up where I started. Much more comfortable moving feet to get balance. Main take away as well is learning not to lean back against the wing like kiting and windsurf but keeping upright. I’m sure once skilled you can but in early days you end up putting too much leverage on windward rail.

Buzzing though, came together today.👍
Mike