Well, certainly 2 schools of thought here. I sailed Taipan 4.9s sloop rigged and A-Classes. Going wild downwind is standard behaviour. Means you have to work hard to keep the apparant forward. Moving to kites I found it easy to cleat and forget the main initially. But after a while (and with a gd crew) played the main similar to the T49 and A and found good increases in speed. Especially in conditions where there isn't enough wind for the crew to be out on the trap.

Probably all down to the technique of how you steer and react to the gusts.