I have found several places near creeks between Solnichy and Dolina, and Dolina and Gorka, where the player does a swimming motion in the air. I will try to describe some places below and also attach images.

1. Immediately west of the double story green house close to Solnichy, on the road from Solnichy to Dolina.
2. Half way between Dolina and Polana there is a barn on the left with a creek near by, following this creek it soon branches, on the left hand branch there are 4 places on the right of the creek this happens before you reach south of Gorka.