I am wanting to replace my L7 10" in my 23ft Malibu boat. I have been running the L7 in a small sealed enclosure for most of the summer and been relatively happy. However I have been wanting more. I replaced the sealed box with a 1.6 cu slot ported box and gained a bit, but still I am wanting more. Issue in the boat is no cabin gain obviously and limited space for an enclosure. So this brings me to my question. Which 12" sub in the Fi lineup would be a good contender in the wide open environment that is a boat? I would like to keep the power requirements realistic. My current sub is powered off a MMATS 600.1 just for reference. Thanks for any advice.