here is a few dozen ideas I compiled. This is the single greatest reason for amateur sport flying decline. IE high cost of hanger space or unavailability..... Portable towable planes if they existed predominately .... would have resulted in a continuing hi activity level equal to two or three decades ago. https://www.use.com/editset.pl?set=68ca7107ffb9de30915d When you get the link scroll down to see all thumbnails. I guess I am a little late in joining this forum.