Welcome and I hope that you stay here. You can use the "introduceyourself" - tag but please only with one post. By the way: If you don't swim good it is the question if this is the best condition if you want do surfing cause what if you fall in the water ? (but tbh I don't know exactly what means not good in your case)
The surfers said it's ok even you don't know how to swim because the surfboard can floot hehe ,
If you are sure that it cannot happen to fall from the surfboard than you are right.