I believed my tuck-up form was good before I started doing hollow straddle hold for FL. I realised I start the tuck-up by engaging lower back(it's arched). Is that okay or I should get into a hollow body position before tucking up?
Secondly, my upper back is really round and looks awful. Trying out other progressions such as Straddle-up and V-up seems like a waste of time(i linked them too) even though I feel strong doing tuck-ups. Please give all the feedback you can!