As a professional beach bum, I can say surfing can be a lot more fun and rewarding than snowboarding. Snowboarding is sort of an instant gratification as you don't have to put a lot of effort into getting your thrill. Surfing is the complete opposite. The thrill and even relaxation of hanging out in the water, trying to read the incoming waves and judging which one is THE one to ride in, setting yourself up and then ultimately riding in that wave. The combination of all that makes for a pretty fantastic experience. Especially if you get a great wave and ride it nicely. It's more of an accomplishment than you can get from snowboarding IMO. I've done both for years and I must say, once you get into surfing, you won't be able to compare the two. Both have its benefits in unique ways.