Scroll forward to 1:01:00 - Flatwater 200m SUP foil exhibition race at the ICF SUP worlds in Thailand
Ollie's winning time on the foil was ca.42secs for the 200m - winner on the SUP did it in 50secs. Ollie's av. speed was 17.1 but that includes paddle up.
Checked my GPS, I've done it in 58secs on a 1600AK Plasma v2 - that's only 12.4km/h!
30secs = 24km/h av speed. How low do you think foils will go?