These don't even really feel hard anymore. I'm also not sure what else to do to improve upon them, as I'm convinced that this PE is mastered. I'm using an 8lb dumbbell on the iM, though I know 5lbs is all that is needed for mastery. I've started doing straddle and pike leg raises, as well as bent straddle leg extensions to work on ROM and strength for PE2 since the tuck-ups are kind of boring for me now. Let me know what sticks out to your eye, if anything or if I can move on instead of feeling like I'm spinning my wheels.
Thanks.