What is the advantage of having 3 fins in my surfboard ?

Well that depends what your comparing it to ! But quite simply, three fins in a surfboard gives all round great performance, hold and manoeuvrability and that’s why its so common and fairly standard as well. Many pros love a quad setup because of some aspects of the ride it gives, but still prefer to ride thruster (3 fin) in other conditions. But if you watch some Word Surf League competitions and look at the fin setups you will probably see most of the riders have 3 fins in there surfboard. Other fin setups such as single, twin and quad are all great in their own way, with some great positives and some negatives, where as a 3 fin setup have been proven over time to get the highest performance in all areas with very negative aspects. That’s about it really ! hope that helps.