Mine is SLA and I charge it after every trip and put it on the charger again before I head out. Works well.
Yeah, that's what I do normally, then last time I didn't recharge just before I went fishing, battery went to shit quite quickly, followed by the FF (see other thread).
I have a CTEK smart charger which I use on my jetski battery. I believe this has sorted my FF. It's now charging normally.
Moving on, I don't know whether to go back to what I was doing before...
keep the SLA attached to the charger when not in use, charger is similar to this:https://www.jaycar.co.nz/12v-1-amp-seal ... r/p/MB3526
buy another expensive CTEK charger and leave that attached when not in use.