I was actually encouraged in a resort in Bonaire by the the diveshop/school to go solo in front of the resort and do some work in the coral nursery. I have to mention they know me, did my OW and AOW and > 40 boatdives with them as a “solo” diver in the group led by the DM, so just keeping an eye on the group and only regularly communicating with the DM with the normal handsignals like being Oke, half tank etc.
Real solodive in the the nursery was around 30 feet max, no pony. I do check, double check my gear to a higher standard, have a knive, return having at least 50 bar when exiting the water, being conservative in my actions and safety limits.
I did informed the dive shop upfront of my plans and timing, got my bottle and off I went. I am a confident diver, precise and have my own gear, and in total done around 60 dives sofar.
Ron