I started doing leases in 1999, using contracts, and I have never had a problem. I just go to the top three bidders of the category the domain relates to at either Google or Yahoo and ask them if they would like to either lease the domain entirely or lease the traffic (a redirect). I call it a "Lease", either way, b/c when you say redirect they don't understand and then...... blah, blah, blah. Lease is a word folks understand.
So, I give them two options and I actually have ended up with way more redirect deals this way..... and what is SO cool about redirects is the way I set it up I get either a 100% click rate or a 80% + click rate, depending how I set it up. You can make much more than with "parking".
Option #1 - 100% Click Rate : Meaning you send 100% of the traffic, minus bots, to their site or a mirror site they create so they can track the clicks/conversions. I use this method if I am not worried about being flagged by the search engines and losing any indexing you may have or want to acquire. Usually I use lesser value/quality domains for option #1.
Option #2 - 80%+ Click Rate: Meaning you send 100% of the traffic to a simple blank, white page with only one link on it, being the domain you and the customer are talking about. My experience is that most of the time you CTR will be over 90% when only one link is on the page. I use this method when I don't want to be flagged and penalized by any search engines, thereby being deindexed and losing surfers/cash if I take the domain back. If you have search engine positions and have a premium domain I recommend option #2 to keep up the value.
I use my own computers to count the redirects, which is the key, but maybe there is a service these days that will count redirects and remove the bots? I don't know. Anyone?
If this service is available at a reasonable fee, where the redirect is not too slow moving, then domainers could make more money this way. I wonder if anyone has explored this yet? It's kinda' a offshoot business idea to something like LeaseThis .
If the customer wants to do a "strict lease", where they take total control of the domain, except ownership, then I usually make the stakes fairly high to make sure they are serious, otherwise I don't feel like messing with it, and if the payments are not high enough they may not be taking it serious enough either and won't put forth the effort to make the domain more valuable, and then less likely to be purchased when the option to buy comes due. I made this mistake early on a couple of times.
A lot of redirect deals can turn to strict lease deals after time also. Putting these deals together is really fairly easy.
And, if you set the click amount high enough the rewards can be tremendous b/c remember you are cutting out Yahoo/Google or LeaseThis, etc.... and it's only you and the advertiser dealing with the "Pie".
Its' funny, but most folks will never execute a buy option. They keep leasing the domain.... its unreal. I think it is usually b/c they are struggling with branding concepts and they don't quite know what to do if they buy the domain - redirect, new brand, etc.... they just get confused.