I can't tell you how it is to rent to non -DVC but I did rent some point recently. From my point of view, it was not too hard for the person I rented from. I emailed saying I was interested and when and where I wanted to stay, he emailed how many points and what price per point. We agreeed, he made the ressie in my name, I sent him payment, and then after he got the confirmation lettter he faxed me a copy.
That was all there was to it. and from looking at the rent board they seem to go quickly. I check the boards at least once a day and sometimes I would see a thread and the first message said the person was looking to rent points and later on there was another message saying they rented already! that happened several times.
It seemed so easy from the renter view, that after I close (week or two) that if I need to rent points, I don't see any problems getting them rented.