My father and I did a full day Everglades Slog and Kayak with Garl and it was a unique and worthy experience. I would highly recommend it to anyone considering it. Garl himself is extremely passionate, knowledgeable, and insightful about the Everglades and really brought a lot to the experience. He was constantly informative and is willing to tailor the experience to your interests.
The slog to a alligator holes and nests was something I would have never considered doing myself and we learned a lot about the flora and fauna of the Everglades. We saw tons of marine wildlife on the kayaking portion of the trip to include numerous birds, manatees, sawfish, and sharks. The crocodiles were a bit elusive but we did get to see one towards the end. Overall a good day we we got a workout in on the kayaks as well.