Hi Drauk
Dont have any experience with leaseback but suspect from what you state the way forward for your flying will be to go into a syndicate.
Aircraft of your choice
Good availability
There are however plenty of options to hire your mount out if you have a PT C of A machine. Quite a lot of owners have formed a group around their aircraft and give people access to it if they have no need for it themselves.
And many clubs and schools will be happy to manage the hiring out of your mount as long as you are willing to let them have a cut of the takings and make good arrangements.
If you set the enterprise up as a proper business you can even make a small profit or loss. Some of this could be advantageous.
HTH
FD