Bill,
I’m revisiting this subject now as I have acquired an ultralight glider that can’t be aerotowed by anything I have access to due to very low redline. I gather there are now wireless line load cells available that could be very handy for our ground launching purposes. If you know of any specific ones especially in the lower load ranges that would be useful to me please let me know. I can imagine that having an easy to use smart phone displaying load cell that can clip into a tow line would be a great safety and performance enhancement for glider ground launching.

Matt Michael