Aerodynamically, helicopters don't really care which way you're pointed until you get fast enough for the tail boom to streamline. If heavy, you need to get to transitional lift while still in ground effect to climb. Transitional lift is when the entire tip path plane becomes a wing and the forward movement contributes to total lift. In a hover it is all engine and collective pitch. You can increase power until you over torque the transmission or more likely start loosing turns. As with an airplane, when pulling back no longer causes climb pushing forward on the stick or down on the collective will help. Ronnie Westmoreland, my primary helicopter instructor at Ft. Walters, did continuous 360 degree turns while hovering out to the third lane on a six lane stagefield. We were supposed to stop before each lane, make a ninety to check traffic, ninety back to the original heading and continue. Westmoreland had been a west Texas crop duster before getting a job with Southern Airways. Southern had the primary training contract with the Army and used both Active Army Vietnam vets and civilians as instructors. Westmoreland, now deceased, was loose as a goose and the finest instructor I ever knew. He taught me to hover in twenty minutes. All three of his stick, in each class, were always the first three to solo.
Download my free "https://tinyurl.com/Safe-Maneuvering" e-book.