Belay device survey for a school project

Hello climbers, For my senior industrial design project, I am designing a more effective belay/rappel device and am collecting information from climbers to help with the process. Please, it would be incredibly helpful if you could take a couple minutes to fill out my survey--> http://www.kwiksurveys.com/?s=IIMJJM_dafed26b Thanks a bunch and happy climbing! -Ted [email protected]