I have a 2 person Sevylor also. It is a great canoe as stated, a bit heavy, however it is really tough and has been great so far. I find mine is fantastic for rivers even in heavy flows and some white water. It is a bit of a chore on great expanses of flat water because they don't have a keel so they don't track all that straight and respond very quickly to every paddle movement. They also are wind effected.
Overall we Find ours excellent for the family and it could easily be used at the beach also. It takes me and the wife + the 2 kids (little ones) easily.
regards
Jas