Disagree on the battery
chargers. Their computer evolution has gone way beyond my old Lewco Ferro-Resonant charger
. I no longer need to replace my flooded cells every two or three years (going on eight years for the current
Yes, there are cheaply built, sold and supported brands out there (Xintex comes to mind).
But there are good ones too (Mastervolt, Victron, Charles).
Do your research
. Buy the best and cry once.
I think this can be applied to just about any piece of boating equipment
As for toys, they are fun to have. Just don't come to rely upon them, or freakout when they fail. Be prepared to say "screw it" and deal with it later.
When preparing for installation
, consider the fail scenario and what any backup or redundancy plan would be.