Well Dave, the mirror stuff kinda implied doing your Jacques Cousteau French Navy Commando Eh Monsieur Prepare to Die routine INDOORS and not for public consumption, but then again, I don't live in Broward county so public performance dive art is perhaps more appreciated there. In southern Palm Beach, you would get Baker Act'ed in a heartbeat. Since you're already purportedly certified, you just need a couple of hours dry positioning, torqueing, manipulating, and tweaking the nearly infinite number of adjustments that deco bottles require. If you have to do this in your front yard, do sell tickets and keep the sprinklers off since the harnesses will be easier to adjust dry. Jeff Weinsier from Channel 10 News would also be interested in covering this story. I know that it took me a lot of hours to dial in my deco bottles' fit but then again, there are so many more experienced armchair divers on this board that I could never hope to emulate.
Secondly, without training in trimix deployment, you are liable to make a critical overinflation mistake on I-95 and achieve liftoff. In yours and surrounding neighborhoods, people enjoy recreational shooting at the Goodyear blimps and low fliers from Fort Lauderdale Executive Airport. You are almost guaranteed to get perforated unless you do this on the 1st or 15th of the month when the checks are cashed and the aim is a little off. Or you could staple a BSO sticker to yourself so they might think you were a new aerial crime-fighting tool or maybe a new Teenage Mutant Ninja Turtle movie wass coming out.
I suggested Jerry's boat since at anchor in 40 feet of water on a sand patch, you can rig, adjust, dump weights, add weights, set your trim, and do all manner of experimentation in the sand without damage to yourself or the reefs or someone's concrete-surfaced pool. You can also do this on your own - I'm not sure any deep pool is going to allow a non-instructor to play with deco bottles unsupervised. Even instructors would have to have most likely named the cooperating pool as an additional insured to gain access. Again, I may be wrong about this.
Jerry is very cooperative about stuff like this, and you could probably get the DM-of-the-day, especially if it's Mike, to dive with you and help with any adjustments or observations. Again, just my suggestion on how to achieve the most effective training in a real-world environment.
IMHO, swimming pool training prepares one to dive in swimming pools.
Lake Boca is another place to do this type of experimentation if you can find a boat that will allow you to get within 100 yards of it.
That might be a problem for you these days, Oreoman...