Posted in the basic section and was directed here. Looking to really take my swing to the next level by focusing on creating more lag. Play to about a 4.0 index now, but have never really had the sizzle on iron shots and hit a very, very high ball (a result of a cast). Will be picking up the TGM this weekend, but currently looking for some drills that i can start working with to help me generate the lag or ingrain the feeling i am looking for. Bonus points for those drills that I can do indoors considering i am in balmy Cleveland, Ohio currently. Thanks.