Nothing wrong with a little "wonder if there's a better way of doing this!"
On the other hand, the phrase "solution in search of a problem" comes to mind too.
Seems to me that even if it were easy to do, you'd want to have your booties on your feet for protection/warmth before
and after you take your fins off, no matter where you dive. You agree you'd want to keep them on, on a boat. I'd certainly want to do the same thing on a beach dive...
Do you wear a wetsuit? Most (not all) folks pull the cuffs of their wetsuit bottoms over their booties... the thinking is, it keeps water from being pushed into the booties while swimming; keeps water from draining down into the booties after the dive; and, at least for me, it keeps my bootie zippers closed. Hard to do what you're thinking that way.
Between dives, if you have a long-enough surface interval -- and it's warm -- you'll probably be stripping out of your wetsuit... starting with your booties. If the surface interval is short, you'll probably want to keep everything on.
Well, give it a try at home... lock the bathroom door (very important
)... get your booties soaking wet in the tub, wearing the fins... make sure
all the air is out of the bootie... and see how easy it is to take both off at the same time. If the booties fit well, I'll bet it won't be easy at all.
And the other way around... I'd bet it wouldn't be easy to put a fin on with a bootie already in it, even when dry!
Oh... don't your fins straps cover the bottom part of your bootie zippers?
(If you're trolling, I hate you!!
)
--Marek