You could use the same functionality to keep a directional antenna pointed at the bird. That would improve the S/N ratio during high flights. Might be a bit tricky under boost!
I'd suggest a patch antenna as opposed to a Yagi but once the rocket is really moving out, the GPS is going to lock out and there is nothing one can do about it with COTS products. Once the speed drops, the receiver can reacquire a signal.
High G's can momentarily cause loss of GPS lock but the chipset can reacquire it very quickly. Go too fast >1200mph/1000knots and the thing locks out.
Very impressive flights.
In some places it would be nice to be able to pipe the lat/long to a map for the visual "types" but it certainly looks to perform well to find ones rocket. Out west there's not much to see on a map but in other places it's nice to have a picture of the likely recovery area so one can plan the recovery route based on nearby roads and obstacles. Yeah one can manually input a last lat/long into a map but I'm lazy and like automatic better.
Plus I get a kick out of seeing the rocket icon jump a bit when I reacquire valid signal of the final resting place. I think Adrian will become rather popular amongst the crowd with this device.
Kurt