Good ideas. Although regarding the part about restraining his thighs, while I understand your point in doing so, the strap I have over the upper part of his thighs goes underneath the bondage stool to prevent him from lifting up. In addition to that, the cuffs on his ankles as well as the straps further up on his legs also help prevent him from pushing his body up, and pushing his ass off the stool. And as if that's not enough, in addition to all of that and as an extra security measure, his feet are resting on the spiked mat, and even an attempt to push his ass off the stool would most likely require him pushing his feet down on the spiked mat, which means he will be pressing his bare feet into the spikes. *evil grin!* I do I like your idea of something covering his ears though, so he can't hear what's going to happen to him next.