We have been implementing COVID restrictions for almost 40 years while diving - we always were masks!Thank you for the invitation , I've always wanted to try ice diving, but as I've said, travelling just right now is quite a bother...
I guess you've got enough power with your XXXL FF Pro. May I know what equipment you're carrying while diving with them ? As a matter of comparison.
I usually scoot around with a camera rig, 2 strobes on extensions, etc. I have had to tow people before. FFins have never left me needing more power. I have doubles but have not used them in awhile, haven't had any problems with power there either. I'm 105 kg, 183cm.