Thanks for your input; these are not Everstarts, but those are what I am looking at for replacement. I used them on my last boat and they were great. Lasted two years and I got new ones. No trying to bleed every electron out of a $200 battery for four years. I got stuck on a lake one time doing that.
That said, I've read numerous places that a true deep cycle battery shouldn't be used for starting, though I know many people who use them with no problem.