My partner and I booked a half day tour with Boris. Just like other reviewers, our experience before the tour exchanging messages with Ivka was very positive. Then, going on tour with Boris was everything we'd hope for and more.
From the get go, we knew we were dealing with someone who cared about the product he offered. Kayaks were top notch and Boris has the proper training to ensure his guests can enjoy them to their fullest. He's the perfect antidote to all those operators who are happy to take your money and set you off with just the bare minimum and no explanation about the conditions and your surroundings.
As a matter of fact, what Boris offers is a real tour. Having taken quite a few kayak and SUP tours in the past few years in a variety of destinations, we'd almost gotten used to the fact that, although people call them tours, what we get most often is someone to dictate the course and schedule but who provides no interesting comment. Boris, on the other hand, is knowledgeable, resourceful and very interesting to listen to. I'm pretty confident he's good at gauging what your interests and skill level are and adapting both his comments and route according to them.
We did ours as a private tour, but Boris ensures us he intends on keeping groups small as this is the best way to interact with guests and adapt to their needs. We are decent paddlers and our tour amounted to approximately 15 km, which suited us perfectly, but he always made sure to check how we were doing and was ready to revise the course should we be too tired and/or not please with the plan. But pleased we were!
Another detail that made the difference: wet bags were provided and our belongings were safely stowed away on each our boat while we were paddling. So I had my camera and ID with me the whole time and could take them out when we were on land. Restrooms were available (before the tour, on at least one of the islands and after), and we could also buy more water at one of the stops.
We also could wear those kayak skirts preventing water to get in when we so desired (like when the waves were stronger) and I've never had such a worry-free ride since I started kayaking!
I'll conclude by saying Boris is extremely knowledgeable about kayaking and about safety, so do not hesitate to book a tour with him as you will not regret it.