Recently bought Foyle Horue H10. I put the stabilizer in position - down tilted. The wind was 5-6 knots with short gusts of 8-9 knots. I took sail 9.6. And at takeoff, the foil was very stable, despite the short fuselage of 70 cm. And even took off with a wind of 8 knots, although the H10 wing is more suitable for a wind of 10 knots.
Think you gotta find the balance of up and down when foiling. Too much of either causes up and down flights.
When you do a long fuselage 120 cm size and position of the fuselage affects the takeoff, as the shoulder is larger and here it is necessary to look for a certain position.
I'm not a fan of adjusting any Stab, any adjustment will create more drag. The only reason this might help is to make it easier to kick up to a flight. But if its difficult to kick up to a flight, why not just reduce the stab surface area? I don't know, need to experiment with this more.
LP in the gorge offers windfoils that include a set of 5 cradles for the stab. They are color coded and make different down angles for the stab. Even for racing, the cradle with the highest down angle is the most popular.
Thank YOU too. I'm one of your newbies fooling around with stab settings in search of stable flight.
Gonna leave it at slight downforce, main foil lift, until I learn how to foil.