We rented two kayaks from Mike and he met us at the Marblehead Boat Launch (ample parking, bathrooms) so we could kayak up the Saco River. Mike is an exceptional person with extensive knowledge of kayaking. He is the type of person who will find out what you know, trust you know it, and add to your knowledge so you can have even more enjoyment out on the water. He does as other reviewers have said get himself over waist high in the water to demo how to get back onto a flipped kayak - above and beyond what I’ve seen any other kayak rental do and we have been out in sea kayaks with rudders. Based on our experience I wouldn’t hesitate to recommend a guided tour with him to improve your kayaking skills even if or perhaps especially if you already love to kayak. We enjoyed our paddle on the river and saw two different sturgeon jump completely out of the water, plenty of cormorants, and even a small waterfall. No regrets, just egrets! Highly recommend.