"How much swimming do you guys do?"
compared to others very little - in the pool perhaps 3 x 30min sessions a week (often just 2 sessions). and as soon as the sea gets to a comfy temperature, I'll be in there instead. I'm not a pool fan anyhow - chlorine does me for 24hrs if I don't use Beconase, and even then I can be sneezing lots after a swim
BUT my swimming is maintenance swimming these days, not for real improvement - I'm at the older end of the tri spectrum where maintenance is more important than trying to knock time off - age will do that for me!! and that's probably the same for all 3 disciplines for me - maintenance of form rather than improvement
as long as I can keep up with most of my age group and still beat some of you youngsters, that will do for me