I'm a 24 yo male and kinda new on the whole SB scene (very new even ! I've been interested in bondage for years but only this week did I finally take the step and buy some rope and a couple of accessories to practice on myself

I've been looking for techniques for tying myself up and found a couple scenarios I would like to try. I will start off with the basics though, not anything too fancy, I want to learn step by step.
I've been practicing knotsmanship (is that a word ?) which I find fascinating, and tied myself a couple karadas (damn I wish I had breasts

But I digress ! Back to the initial topic
Here's the list of things I freshly acquired :
- a ballgag with 3 leather straps
- a 25m (I believe 80-ish ft) rope but I've already cut it at several places of uneven lengths for different purposes. Longest must be like 8m (25 ft ?) for the karada.
- a buttplug
- a blindfold (which I won't use on my first sessions until I'm absolutely sure of what I'm doing. Like I said earlier : step by step !)
- a padlock with 2 keys but I'm thinking of getting a second one with code to vary)
- knives, scissors to cut off the rope
So, I wondered if there was any way to secure a rope hogtie (or any similar position) with a padlock ? I did a couple tests with a slipknot (hands in front) and actually got my wrists securely bound with no way to unbind then. I had to cut it off with my scissors. It doesn't matter right now because I'm learning the art of SB and it is rough-quality, cheap rope, but I wish to buy some good rope later and it would annoy me having to regularly buy some more...
I found a technique but I don't particularly like it : Instead of doing a normal wrist coil, I tied each end of the rope to the padlock, and even with the slipknot tightened in the middle of the loop, I could free my right hand, and just pull the coil through the cinch http://imgur.com/a/wi4Ml
So far so good. Problem is, I really don't like a single loop on my wrist coil. 2 is not bad, 4 is good, and I believe 8 would be great if I had thinner rope.
I need a technique to "complete" a hogtie with a padlock, so when the ice melts and I get the key, I can free at least one hand (vastly enough) so I can free myself with this hand.
Do you have any answer or help for my problem ? And every comment, thought, or piece of advice is most welcome !