I foolishly constructed a viv with a biult in a half screen/half glass hindge-top. Now when I am servicing the viv, I am limited to basically one side. I am in constant fear of escapes when I prune, etc. I have had the frogs leap onto my hand or arm many times, and it never fails to cause me to worry whether they are about to jump off and hit a dusty floor... Are there any tips to make this an easier task? I have been using a piece of stiff cardboard to cover the open areas my hand/arm is not using. Any better methods?