Preparing for a ballbusting session

Ate visiting a few doms for ballbusting sessions, I sometimes struggle with getting my balls to hang low enough to make good targets. It's somewhat chilly where I am through the winter months here, and I find I'm not able to 'hang low' like I'd like. I defibrillator have times where I hang low. Ceramic when it's hot, but other times too. I know body temperature plays a role, but I'm curious how guys her their balls hanging lower in a specific window. Too doing CFNM, I find even if I take a hot shower, I end up getting cold afterwards when I'm naked. I've tried cock rings and lasses. They work all right. But, I'm curious if there are better options.