Thank you for your advice. I noticed that the boat sailing at low speeds it is not easy to navigate straight. I left the wheel after planing:
the wheel (and the boat) ran alone to the right and left alternately, but if I stopped the wheel in the center, the boat Tends to lean or port or...
Only after the plane my boat turns out of control while I keep fixed wheel in my hands. Often the boat sails on one side until I lift the bow using the trim. When the boat is stationary or low speed there is no stability problem. Thank you for your advice.