Depends on your style, in my opinion. I might be a tad outdated as I was out for a few months,I rely on momentum when I use on-30.00 gravity all the while making my motions as realistic and efficient as possible. Like, I try not to do openers I cannot possibly make a decent follow up on. For the -9.82 gravity, I make sure my opener won't lead to me floating off uke, and I always make the first hit a nograb. Usually, my openers are influenced by what kind of media I've watched beforehand.