That said, don't think you need to buy a platform topper, a cam cleat, or anything other than what you already have. If you practice enough, any attachment method works. As you practice you'll learn how to lean into the rope more. To some degree everybody unconsciously fights the rope the first few climbs. You'll also learn the small details of spacing; how high to set the stick, where to place your tether, where to place your prusik, etc. All those things burn energy if done improperly. Keep practicing. Just make you set your stick very firmly each time and don't get sloppy trying to be fast, that's where accidents happen (which can be very serious in one-sticking).