“My main interest is in very low wing-loading thermal duration gliders (6′ span, ~20-30 oz.) flown mostly off farmland and parks (away from people and powered model aircraft, both of which are incompatible with launch lines). Typical launch height is 600-800′ AGL, which results in flight time less than 3 minutes without thermals. A good thermal often results in rising to 1,500 to 2,000′ AGL (the practical limit of vision). I also have a few small gliders that I use for slope soaring on unpopulated hills and beach bluffs, none of which are “established flying sites.” I have also used micro aircraft both indoors (tennis court) and within the cul-de-sac in my neighborhood.”