I was just remembering that we were bringing a restored 18' MFG wood decked boat back to our cottage on Winnisquam and there were some pretty good sized waves on that lake. I guess with the length and if you get the wind coming down the length on that lake you can get some whoppers there too. I think they were at least 4-5 feet high. They were breaking on the bow. We were lucky to be heading from the sand bar to the point on Lower bay road, so it was bow on. Would not have been fun going parallel to the waves or with them....Yikes. I love big water. Ever since we brought our 28' Wellcraft up from Rhode Island to live out it's last years on the lake, I have only been out on calmer days. Biggest was probably 3-4 in the broads one afternoon. Man. You guys are making long for the ocean now....