I've done it several times & it makes the meat taste a lot better. Ice it down for 4-5 days. Drain it in the morning, pack it back down & then drain & pack before you go to bed. The blood will get strained out which will take away a lot of the game taste. The meat will turn a gray color which is a little disturbing but once you cook it & taste it's well worth it....
If memory serves I had to drain one deer in the La Fiesta parking lot during lunch a few years ago. I shot the deer on Sunday, drained it Sunday night but didn't drain again & pack until lunch the next day. It looked as though someone had been murdered, there was a distinct blood trail from my pick up to the storm drain at least 20-30 feet away. Brought me a lot of happiness. I sat by the window during lunch & really enjoyed how confused customers were when walking in the lot.....
Big Country Outdoors