Of course. Well once you've got @cbr998 restrained, blindfolded, and gagged, it's not like he'll see what kinds of tickle torture implements you're coming at him with, right? Although consent is important. So after you have him restrained, blindfolded, and gagged with a severely muffling gag, you really should ask him. "Is it ok if I mercilessly attack your soles with this devious toy? If not, just give me a clear 'No Sir, please don't use that to tickle torture my soles.', and I won't.". "Mmpphhh" "Well I don't hear you saying that, so here it comes!" ;-)