Thank you for this .... I've ignored the energy aspects of a long day on the water!
At the 1978 (I think) Laser midwinters on Biscayne Bay we were on the water all day ....... the Coral Gables Yacht Club support boats came by and threw us a paper bag lunch which of course landed in the salt...
The key is just to get some dry, preferably warm air flowing through the hull.
I brought a hull inside my house once after moving out from parents and before being married.
If you are married or living with parents this tactic might get you kicked out to the shed.
OK I need help .... I admit it.
I'm 63 .... run 3 miles several days a week, bicycle 10 - 20 miles, kayak for 60 minutes upstream and back home, weight machines at the athletic club, ..... the darn Laser wears me out sailing more than four or five 45 minute races in an afternoon ...... do I...
Good article .... I'm a wet suit kinda guy.
Progressively as it gets colder, thin wet suit shorts (1 mm), shorty wet suit, farmer john 3 mm, add a wet suit top, spray top, wet suit boots.
NRS has a great line of limestone based wet suit products made for kayaking that are moderately priced...