Unofficial speeds for the first session
Source: ABRA

U-1 FormulaBoats.com 155.149
U-5 FormulaBoats.com 153.754
U-6 Oh Boy! Oberto 140.419
U-10 Miss Ahern Rentals Equipment Rentals 140.696
U-13 Spirit of Detroit 142.766
U-16 Miss Ellstrom Elam Plus 161.127
U-37 Miss Beacon Plumbing 151.579

Details at ABRAHydroplanes.com