Battery help in Ft Lauderdale

I used them as a house battery, many many , years ago. Expensive but we'll worth it.

I has Rolls/Surretes for house and start batteries on my first Florida sailboat boat back in 1998.
Good stuff with almost 10 years in service before they petered out.
No way I would replace them with new Rolls batteries unless I was sailing to and exploring Antartica for the next 7-8 years. $$$
My neighbor was the Deka distributor in Fort Lauderdale and offered friends and family prices for the 6 volt golf cart batteries I used ever after as well as the Start Batteries, 5 total.
I averaged 5 years, sometimes 6 but the solar panels would mask the lack of capacity after 5 years.
Still great batteries and he sold 50,000 units to West Marine with their label slapped on.
(I also used the Dekas in my Duffy Balboa Electric boat and in my MB E-500 wagon, great batteries)
On present small boat I have 2 Interstate AGM house/start batteries, group 34.
Had 2 Optima’s last year but they failed after 3 months and one dragged the other one down to 5.4 volts. They recovered but couldn’t trust them after that, hate to paddle home at night using my hands, single engine boat, no generator.

Or be in really tough locations to swap. Previous Bert came with Surrette's I kept for 8 years.

I removed the 8D's and switched everything over to Group 31 Odyssey's. I'm getting six to eight years out of them, staggering replacements because I staggered installs. Amazon delivers them to my doorstep wherever she may be berthed. I've enjoyed success with them and wouldn't change the plan. In fact as I transitioned from the original 32V to a universal (12 and) 24V, I isolated the Detroits and fed them with 3 batteries each for 36V. I put 12V AC chargers on them between operating periods, and had terrific success starting these big irons. It was actually a bit disappointing when I swapped out to 24v setups in that the cranking was back to normal, less robust...

The smaller batteries were easier to navigate, still expensive, but allowed me to create more space and know that in a pinch I could harvest and relocate a good battery to replace a problem away from the dock because all on board were alike.

I get it! I complain about the 31's when those days arrive...but, seriously, excellent success with the Odyssey 31's. I think I have...16? aboard. I keep the freshest on the house and the electronics. Then they migrate. I map them and track dates and relocation flow in the log. Top of my head I think there are still a couple aboard going into Year 10? Of course once they reach locations of minimal cycles they last a while. And with the ability to parallel on both the mains and gens, I can milk them through a season until convenient to swap.

When on the phone with them 2 days ago I learned they no longer do marine installations but provided several names & numbers.