Big Bullgills go thump in the night. The best tips I can give will be to go scout the area out during the day so you have a general idea of how you need to fish it during the night. The best night spots are open and don't give you any back cast issues like snagging your fly on brush or trees. I like to use larger flies generally during the night then I do during the day. Like a size 8-12 fly, my favorite rig is a size 8-10 black bugger and then about 12-18" behind that I will trail a size 10-12 black bugger. I like to use webby hackle on these buggers so the flies push more water which I believe to be critical to getting the attention of the fish. As far as the technique, one that I have found to be extremely effective is to cast your flies out, with your rod tip down near the water slowly raise you rod tip to the 12 o'clock position. When I say slow I am referring to this process from 8-12 o'clock should take 20 to 30 seconds. If you don't get a bite just roll cast your flies back out there and start the process over again. Tight lines
The fishing was pretty good today. First cast with a game changer chatterbait yielded a nice bass. Caught several other fish on it as well but with the over cast skies I knew the bass would be looking up. Switched over to a Cohens frog leg diver and caught several more fish on it as well. Finished the day off with my Senko fly and caught several fish on that as well.