Honestly, you've got to make at least one dive, unless you're a total... um... Dawg. 
Seriously, seriously, however, the first dive isn't half bad. Sure, it's rather chilly in the water, but it's really not as bad as it would seem. If you're too cold to make a second dive, nobody will force you into it ("Anyone can call any dive at any time for any reason." and all that), but being able to say you dove in February (before Valentine's Day, even) when the forecast *high* was 45 degrees... You can't beat that for the story value (especially to non-divers).

Seriously, seriously, however, the first dive isn't half bad. Sure, it's rather chilly in the water, but it's really not as bad as it would seem. If you're too cold to make a second dive, nobody will force you into it ("Anyone can call any dive at any time for any reason." and all that), but being able to say you dove in February (before Valentine's Day, even) when the forecast *high* was 45 degrees... You can't beat that for the story value (especially to non-divers).
