I have a trutrak which I love but in my aircraft installing their altitude hold is going to be hard. it is especially nice in turbulence doing a better job flying than I do. Is there out there or could we develop a simple altitude hold using a Mac trim servo on the trim tab connected to either a vsi or one of these nifty ahrs units. No fancy descend or climb option neededJust need someone watching my altitude while I,m gawking around outside on a cross country. I don't have the ability or time to develop this but am definitely a customer. Ray