Have an 18' tiller and you really have to read the forecast, and take the average of multiple forecasts. Many days the wind will come up and then drop off. Trolling or perching in 3-4 foot rollers is fine. Getting there and back in more than 15km/hr or 10 knots head on or quartering to is less fun but doeable, just slow, and wet. If the winds from behind when I'm heading out and forecasted to drop later in the day I'll still go. The lighter tinners don't smash through the chop like a heavy glass boat but they also don't dig in to the big rollers and ride higher on the swells when trolling or anchored. Picking the days on questionable days is more art than science and the odd time you just have to turn around and head home when the Lake's not as advertised. Yeah I'd rather have a 24' Grady White but gotta make do.