Massachusetts (Cape Cod area) fresh water boating lakes?

[cigars n scotch]

I'm looking for some input from the Massachusetts residents on this board or folks familiar with the state in particular the Cape Cod area.

My wife's family is spending a week in Nickerson State Park and she wants me to go but I won't unless I can bring the Supra. Since Cape Cod is salt water I'm looking for any information on fresh water lakes that don't have HP restrictions and allow watersports.

There's a lot of bodies of water called "ponds" but after looking a little further they're all too small or don't allow boating.

I'm trying to appease my wife since I really would rather spend the money for our own lake trip. At least she said we would only stay a a couple of nights.

[FULL-THROTTLE]

Check out long pond in Brewster

[cigars n scotch]

If that's the one by lakeville then its a bit far from cape cod (1.5 hrs almost)