how good are they and wat kind shuld i get ? im 5'6 and 125 pounds but i plan on using it with my wetsuit for winter surfing so with the suit on i probably weigh about 140 bc of all the added water weghit of the suit so if i were to buy a quad fin shortboard how big and how thick shuld i get it ?? im an experienced surfer but never ridden a quad before so im just wondering