The dealers near me seem to carry mostly 14' boats, some 16', but yeah, the 14 seems to be popular. No difference in the regs or titling though in NY.
I looked for about six weeks in upstate NY and northern PA, constantly checking on FB marketplace and CL. A couple boats that I targeted, I lost because I didn't jump on them fast enough. Eventually I found a nice 2017 Alumacraft 14 tiller with a factory floor that had never had a gas outboard on it, just moored in a small lake in PA with a trolling motor. Beautiful shape, very little wear at all. Bought it from the original owner with the troller and original trailer for 2700, then bought a new Yamaha 25hp with electric star and power t/t. I have no ability or desire to deal with small engine repair. I looked online at hundreds, maybe thousands of boats, and never saw any "screaming deals" for anything in nice shape. I'd rather pay a fair price for something that has no issues than save a few bucks and get the surprise later on.
When I saw the Alumacraft on FB on a Friday evening, I was down there the next morning. And yes, there were others who had contacted him and waiting to see if zi bought it.