Sure, the ball doesn't get alot of roll in the LD events, however the length in all is different as they play with LD balls that produce less spin etc and fly further. There is also a difference when it comes to club head speed as LD guys use longer shafts = higher club head speed. They have restricted the length of the shafts in LD events since the shaft were over 60" etc earlier, but you are still allowed to use 50" shafts. As for 150mph, thats the highest meassured numbers and they don't really get that high (anymore). Also, as you pointed out.. that's when they swing out of theire shoes which Stenson and the boys never do. Tiger says he swings his irons at 80% and his driver not so much harder. Furthermore Sadlowski isn't really the Tiger of LD since he only has won one RE/MAX title.