Sink rate performance - Following on from the Beetle, further development work has been undertaken to provide a better sink rate when thermaling and during manouevers. The BeCool offers a wide turn radius range which can be easily modified inside the thermal.
This wing really shows its best potential when thermalling and not just in calm air flying. This is due to the way the BeCool bites into the thermal during the turn, which enables the wing too retain its speed and naturally follow the thermal's course. Hence, it is not so important to apply as much brake as you would to maintain best lift in calmer air.