Though admittedly inexplicable, I somehow managed to find more than 22 willing slaves in my lifetime. Each was more profound than the last and each more prolific than their predecessor.
What I cannot offer to anyone in search of a permanent slave/Master relationship, is a formula for success. That said, my method was a little different from what you describe. All monies earned was placed into a pool over which I presided. No need went unfulfilled. It worked for me. I cannot say why it worked, only that it did, but the slaves were employed, all of them. It is not necessary to keep a slave on a leash 24/7; actually its counter-productive. Get inside a female's head and you will find her deepest desires hidden there. One must work WITH a female, NOT against her and I can guarantee this...she will surprise you more often than you could achieve by sending her to prison and lording over her with a constant whipping or threat of torture.
If a female cares about her Master, she will do His bidding, but the truth is, the bottom is always on top. Follow the slave's lead and if she is a true slave, she will take you to the place you seek.
Nowadays, its mostly just me and my slave/wife kita_Dove and I can honestly say, she rocks my world 17 years later. she survived all the madness and remains bound to me for life. What you seek is somewhat possible but your core ideas may have to change in order that you recognize your greater goal which is to own another human being. Don't give up but do give it time.
I am called Lord KnightHawk, my name is Aaron Knight and my friends at Slave Farm call me Aaron...
I wish you well