Just to add to this:
* My last transfer to Hertz took 5 days (11/4/12 - 11/9/12).
* And yes, I've been pushing my e-rewards over to Hertz lately. We are going to Honolulu next month and we are renting 4 days spaced out over the week. With the remaining taxes, it is a bit over $7/day for a Hertz local rental and a bit over $12 from the airport. I booked 1 month before and had no problem getting standard awards and have had no problem tweaking the pickup times (one I pushed back to the night before) after the original booking.