To fish or not to fish

Hi all just wanted opinions on my next board.
Am currently riding a 7'10" Surfers Paradise minimal and seeing as an average Cornish day might be 2-4ft I thought moving onto a 7' fish might be the way forward as the high volume would enable me to catch waves fairly easily (I'm still a bit of a kook but get in the water whenever possible as live next to the beach).
Also would a thruster set up on a fish be more or less stable than a twin or quad set up?
Cheers
Am currently riding a 7'10" Surfers Paradise minimal and seeing as an average Cornish day might be 2-4ft I thought moving onto a 7' fish might be the way forward as the high volume would enable me to catch waves fairly easily (I'm still a bit of a kook but get in the water whenever possible as live next to the beach).
Also would a thruster set up on a fish be more or less stable than a twin or quad set up?
Cheers