Well in our state the new FT rule does not go into effect until Nov 1st, so all of the summer league games I've reffed (and am reffing now) are utilizing the current NFHS rule. No reason for teams to be using a rule that theoretially does not 'exist' as of yet
; however, when the rule does go into effect I know there will be the usual array of missed calls and mistaken calls which is typical for the implementation of novel rules. I expect that FT shooters who use a "hitch" in their release will draw lane violations from both their team mates and opponents. (by 'hitch' in the FT shot, rem'ber like grand-mama larry johnson used to shoot his FTs: holding the ball high and just before releasing FT he would stop in mid-form and pause for a second, then release the shot).