The addition of a bow pulpit as well as the 226 vs the 228 will make the different models vary considerably in size. I've got a 228 without a bow pulpit and on the trailer with the engine down it's about 31' in length. I'm sure off the trailer in the water with a bow pulpit and the motor tilted up that it'd be pretty close to 30', like Ryhlick said. But.. if you do get a 226 then you'll gain probably 2' or so of slip space since you won't have the transom bracket to deal with, and if you don't have a bow pulpit on top of that then I'd bet you'd be pretty close to fitting in a 25' slip. What's the difference in price between the 25' and 30' slip though? Unless it's a huge difference, I'd buy the boat you want and not the size of slip that's cheaper or more convenient. I personally wanted a boat with an enclosed transom and the transom bracket on the back of it because of safety reasons, being on a mooring buoy for weeks/months on end and I like the extra fishing room as well as the live well for bait and so forth. My niece just turned 6 and my parents are in their 70's, so I didn't want an issue with a partially open transom in the back. That, and during the summer I leave my boats on my mooring buoy in front of our beach cabin on Whidbey Island, and I'd prefer not to take any waves over the stern of the boat and potentially have an issue.