Boy, that's a tough one.
But first -- have they ever dove any sites on the Lake? Are they more interested in wrecks, treasure hunting, crazy bottom topology, or anything?
Leaving from Gilford, the obvious "must see" is the Lady of the Lake. The earlier, the better -- especially on a weekend day. Good for entry-level divers, yet cool enough for more seasoned splashers. Shallow, warm, lots of fish. But make sure they don't take any "souvenirs" -- the Lady has taken a beating in recent years.
The Navy Test Site & Empty Pockets at Diamond Island are another good dive that's not too far from Gilford.
Bear Island Horse Barge, Weirs Barge, the three-wrecks-one-cove along Long Island, wall west of Parker Island, the wrecks around Ship Island, Rum Point...
So many sites, so little time.
These are just some of the popular spots. Of course, there are new ones being found all the time.
