I leave the game after shooting for 15 minutes, and drive home to pack up the scope and stuff. Set up, start to polar align at 11pm. The comet has an approximately 15 arc-minute coma elongated to the west, and a very faint, one degree tail. The tail is very difficult with the binoculars. During the first photo before moonrise I observe Hyakutake unaided eye and with the binoculars.
Transparency is excellent from the front that has just come through.
The unaided eye limiting mag is 5.5 overhead. The comet is in a pretty dark section of sky for this observing site. The seeing is terrible. Temperature is 21.4 degrees F. Luckily there is no wind. Let me amend my comments on the seeing, it is atrocious, with even worse moments, even on Porrima which is relatively high.