There have been several good posts on other links on TF about hull design, one recently about displacement hulls. Check those out. Autopilots react but don't anticipate. Switching to manual steering on Delaware Bay around 3' stern waves helped a lot, as they built to well over 4' and I spent 8 hours at the wheel....slept well that night! A flat stern is lifted by a wave. A round or canoe stern is not lifted as much. A large wave can move a flat stern boat toward a broach. It's worth learning how to handle stern waves from some old salts or from US Power Squadron courses/instructors. Chapman's also is a likely good first step to learn more. Most importantly, know your weather forecasts before leaving home port, and let your experience level help you determine what weather you want to take on. Start with "bluebird days", light winds, and learn by practicing near home port. Take all the US Power Squadron courses you can take, on line and in person. If you choose a Camano, find some other local Camano owners for their experience in various weather, docking, etc, conversations. Having said that, there are plenty of good reasons that right now there are only 11 Camano 31s on the market out of a run of 262 or so hulls made, with the prices holding up very well, too. These are great boats, but no boat will exceed expectations without good training and planned practice/drills. Same goes for maintenance...learn before you need help. Lastly, gas boats are more dangerous than diesel boats. Learn the difference, and take good note of what fuel serious passagemakers use for long blue water cruising. Do you really want to be cooking on a gasoline fueled boat? I'm delighted with my Camano. Never looked carefully at more expensive (roughly 2x for same age/hours) Nordic Tug 32/34s, but the dockmates with those are very happy. Best idea is to join the Power Squardron, take courses, go slowly about making a purchase decision. Trawlerfest 9 months before I bought my Camano was a wise choice, and a Steve Zimmerman course helped me decide what to buy - matching my intended uses to hull type, size using charts he shared in the class. From those, I knew I was on the right track in choosing a Camano for my intended uses - coastal cruising in North Carolina's mostly inland waters, the Chesapeake, etc.
One more thing - read a volvo engine manual. Mine suggests not running wide open throttle beyond a certain amount. A recent PassageMaker article by Steve Zimmerman addressed engine longevity with comments on how often runs at more than 30% engine capacity, etc. If 12 kt means a whole lot to you, do you want to run at 80% of engine capacity? Or do you want a different kind of boat designed for a steady diet of 12 or whatever kt? My intended crusing between 6.5 kt (practical hull speed) and 7.8 max "cruising speed" works well with a Camano. I rarely run more than 30% of a day over 7.8 kt.
Best wishes for a fun process of learning about hull shapes, engines, fuels, and what your intended uses uses mean in terms of choosing the right boat for those uses.
After having read what I've written so far, the smartest thing I did was go to Trawlerfest and take a Steve Zimmerman class about what to ask when buying a new boat. I thought by having had 3 sailboats and 2 powerboats previously, I was ready to buy a trawler. Wrong. Steve bridged the gap for me, and I subsequently moved forward carefully and more confidently.
Alex