JK-- I don't think you are looking at a sled as Sea Nymph is made in the Midwest. My guess is that it's a large jon boat, which can be used as a sled, but...

The thing to do is check the transom height. If it measures between 15 to 20 inches from the top of the transom to the keel, it wasn't built as a sled. Sled guys can shed some light, but I think the transom for a jet outboard needs to be something like 25 inches. You would have to add a jackplate, have the transom rebuilt and/or maybe add some reinforcement to use a pump.

Value is hard to guess without seeing it up close, but you can get an idea of current prices of new jon boats by looking at the Basstracker site for the Grizzly line of jons or maybe G3. G3 is making jon boats with extended transoms for use with jet outboards, and that site might give you an idea of value of a new boat that is comparable to Sea Nymph.

Good luck,

Keith