I wish *I* had a son/daughter who wanted to tie ME up!!!! They wouldn't have much trouble getting permission!
As for hog-tying your dad, do you expect to somehow keep the idea that you like bondage a secret from your dad if you manage to tie him up? If so, forget it; especially as you've said you already did something like this before.
No one you do this to will miss something
that obvious!
If you don't mind an older person's perspective IMO it probably wouldn't be a good idea to do it with your dad again 'for real' unless you just straight out ask him if you could do so. If he doesn't go for the idea when you simply ask, he probably wouldn't be very understanding if he was somehow tricked into complying with something more stringent than he'd expected (especially if he has no idea of how good your tying skills are). Once you tie him up, he's going to know you like bondage anyway; it'd be pretty unlikely he wouldn't figure it out after something like this - assuming you did a decent enough job of it that he had trouble getting out!
So if you really want to tie him up without having to let him go right away (but maybe watch him struggle a bit), and don't want to ruin your relationship with him in the process (I assume he's not into TUGs) and you don't want to be made to undergo therapy, I can't think of any way to do it but to try explaining to him what you want to do and why first. Otherwise, unless he's into TUGs himself or is a VERY patient man, you're better off finding someone else more receptive to the idea and safer (IOW no serious misunderstandings are likely to result) - preferably someone closer to your own age who might be susceptible to bribes or being dared rather than forced into it.
The only indirect ways to ask that *I* can think of would be to dare someone to let you tie them or bet them they can't escape on their own, but I doubt that either method would be a good idea with your own father (or any significantly older person for that matter). It might work on peer age friends though.
Dare to be different... and make a difference.
To boldly go where no one in their right mind has gone before...