A friend and I bought and sailed a 1974 (yes, 1974) 16' cat last summer and made a few interesting observations that I'd like to verify are innate to the boat.
1) In the light winds of western KY midsummer, we found that we gained the most power on a medium reach, and that power trailed off heavily at most other angles.
2) When on one of those medium reaches, we found that the gib seemed to contribute most to our thrust as opposed to the mainsail. As much as we trimmed the main, the gib had the largest effect upon speed. Small changes in gib trim made all the difference.
Was this a result of our lack of knowledge, or is this a common experience in light winds with a 16? The sails are definitely blown out, but we did scoot with some reasonable power in gusts.
Background: I had sailed a Sunfish as a youngster under the guidance of my grandfather who learned to sail in the Navy while stationed in San Diego. Other than just getting out there and figuring things out myself, I've not sailed with any experienced folks. I currently sail on Kentucky Lake, but might be living in West Palm Beach soon, so I'm trying to learn the basics a bit better before my main body of water is an ocean.
Thanks much,
Rion