It was really blowing when I rigged up but after my first run the wind dropped right off, hence the slow speeds for runs 2, 3, 4 and 5.
Max. GPS (display) should be 30.05 knots. The one above was the max. non-Doppler speed shown by the software.
Tech Details: Navi GT-11 v1.62 (B1024F), GPSAR Pro v1.2, Non-Doppler.