Tucking in a cage

Heading to the beach with my boyfriend in a few weeks and trying to eliminate my bulge entirely—any ideas?

I’m locked in a Kink3D baby cobra narrow, so not much to tuck in the first place, but I tried tucking and it was pretty uncomfortable.

Goal is to wear women’s bikini bottoms instead of my men’s speedos, and would really like a completely smooth and more feminine look down there.