Heedm,
I believe the equipment you are usings program will be set up for a particular hover height.
I don't think that the Rads and chadwick 8500c and above care too much about 5 feet to 50 feet but I am not too sure.
If you can take a run at the desired height and then another at fifty feet it would be interesting to know if there's any difference in the solution provided. If a track and balance comes up for me soon I will check and let you know. If it's the same keep me at five feet.
Does anyone remember tracking flags, grease pencils on a stick and fishing weights?
On point 2 that's how Columbia did it when I worked there, no other option.
They did have a string of tags in small wood that ended up being around 500 feet though
