Prob completly wrong here , because i couldnt get through the whole post. But you dont fly by numbers . You look, feel and react. Sets of numbers to fly by migh work in big heavy birds , but ultralights are about getting your head out of the cockpit 95% of the time. The only thing you cant judge using your senses is airspeed , yep its nice to glance at the altimeter as well , but the vsi never in the cct ( it lies to you in any case)