Here is the result. Group of the specialize in climbing coconut can use this device but slower than climbing by using cloth wrapped around the foot that faster and more maneuverable. Climbing by using this device make them more confident and feel safer and 5 people in the other group who people has never climbed coconut tree cannot climb the coconut tree by using cloth wrapped around the foot
But all of them can climb the coconut tree.
When measuring the satisfaction of 2 groups,the specialize in climbing coconut are very satisfying.
The group that 5 people has never climbed coconut tree are the most satisfied