I found a snake location that seems permanent. I've gone past it at least a half dozen different times tonight after dying/reloading the game/fast traveling. The coordinates are around X:541.8, Y:484.6. It is in the grass a foot or two off the off road on the river side of the road.
There also seems to be a snake spawn at about X:473.5, Y:474.5. And at X:474.7, Y:465.0. These are much less consistent than the first one I posted.
Last edited by xhunterrrr; 05-05-2013 at 01:45 AM.