honestly, i'm very comfortable in the water. I love swimming long sessions and consider myself an ok swimmer- no problems avg 1:20/100 for my usual 3,000-4,000m swims but I just never bothered doing flip turns. Sure, I dabbled here and there and if I had to do one, I could pull it off. I've just gotten so used to not doing them that I don't think about it. I don't think I'm doing an injustice to my training by not doing them. I won't be doing them on race day and I surely don't rest at the end of each 25. I hit the wall and immediately push off underwater with no wasted time- i've gotten pretty quick at it. Not doing them doesn't hurt my rhythm in the least. Rhythm doesn't have to be accomplished my flip turns, it's simply accomplished by doing something over and over until it's natural to you.