You should have used a larger sail.
We finally got some wind yesterday here in North Texas, 14-20 knots . Not much wind around here in the summer, but Fall is now here. I was on my iS 111 and Maui Sails TR4 7.6. On plane 100 % of the time, great speed for me (peak of 29 knots) and a great day. Most guys were out on 6.5 - 7.6 sails. My buddy that weighs 70 kg was out on a 5.8 sail, a 100L board and did well, but didn't plane 100% of the time.
Formula 160; iSonic 111; HiFly Move 105; Tiga 263; '85 Mistral Superlight.
Maui Sails TR 11.0; 9.2; 8.4; 7.6; 6.6; Maui Sails Switch 6.0; 5.2; Maui Sails Global 4.5; 4.0.