My friend,
I have had an experience with such latex figures, I engaged in the situation only out of the desire to cultivate my double under guard passing technique. Other grappling dummies designed for grappling are of great expense so I innovated a brilliant solution to the toils of a enthusiastic grappler. I purchased mine from my local filth merchant, to which I had admittedly previously visited on occasion.
Open the hatch and let out all of the air from said doll, then fill the air compartment with sand, so the doll have be heavy and more life-like for practising things such as De La Riva, or inverted guard. Sadly my girlfriend walked into my bedroom whilst I blossomed on the cusp of completing a perfect double under pass, and assumed that my intense weight bearing into the latex 'hips' as it were was an attempt to shovel my genitals in and out of the genital insertion compartment.
It took some quick negotiation skills to convince her that I was not engaging in coitus with the sex doll, bur rather using it as a tool to improve the quality of my top game.
So my friend, if you do this you may have one of the greatest tools to aid in the development of your grappling.
