You said you were thinking of booking the Esther G "OR" Davey Lubin... they're one in the same. Davey Lubin's boat is named the Esther G II. Those are great tours. Any time you can get out with a local on a small boat, as opposed to a maybe-local on a huge boat with 100's of your closest friends, it's a good thing... then again, that's my business, so of course I think it's a good thing! ;-)
Better not for now... signatures get me banned!