Doesn't seem to be a problem gauging 100 mph for night flyers or 400' in altitude for the $58 guys. Besides you should only need to take the trial 1 time on your machine, the requirement is for 60 mph in capability, not overall top speed. Once again we are debating a simple solution and process which is blown out of technical proportion. It really isn't that difficult to find out, even for us PPP's.