I haven't experimented with fins too much but everyone tells me it can change the feel of your board a great deal. I really only have the standard stock composite future JC1 fins that I use on my daily short stubby board. By the way, I'm about 160 pounds which I'm told can affect which fin size to use.
Does anyone know the best fins that work in more punchy larger hollow waves on my used thumb tail short board which is designed for this type of surf? Can you use smaller trailer fin is that not recommended for larger surf?
Maybe, this could be a thread were people list their favorite fins for their different types of boards and wave type.