Butt action: Straddle hollow body hold

Am I cheating by flexing glutes during this hold?  Definitely feels easier, like I can support the legs by hardening the butt... Thanks!

Squeeze your butt in the hollows, Caleb! Also submit a form check of these if in doubt

An easy form check going by feel Caleb (especially for the people with big glutes), is that if you feel like a rocking square you aren't round, if you feel like you are round, then you are more than likely in the correct position. In ALL gymnastic strength movements you can NEVER go wrong by squeezing the glutes.