Gentle Boost

Humans familiar with low-gravity environments are also better trained at dealing with the complete loss of gravity. At the end of each round in which you're untethered, attempt a DC 11 flat check. On a success, you ignore the clumsy and off-guard conditions imposed by being in zero gravity for 1 round and can increase or decrease the number of squares you move by up to 10 feet (up to 20 feet on a critical success).