Originally Posted by Gurges-Ahter
Was it that Luke determined the gamorrean wasn't worth the effort, or was it a pre-emptive measure taken to prevent more of Jabba's crew from deterring his entrance? Perhaps if he hadn't taken such measures, he would not have had any success getting in. I don't know either way, but I think it's unfair to assume that he did so only because it "wasn't worth the effort".
There are really a bunch of other more effective, quicker, and less crude Force techniques that can disable them, if that was his intentions.