Hi
Second for Optima, run a D34M in the boat as the staring battery and a D34 yellow top in the car as a second battery.
Having said that the house batteries are 10 year old AGMs (2x 55ah) and when I spoke to the supplier a couple of years ago he was surprised to see them still going! I think they are SSB???
Best thing I have done though was fit a blue seas battery switch and m-ACR to look after the batteries whilst I look after the fishing.
Regards
Bob