Hello, I have been tying a ton of teasers and have teh same problem. After a few hits, the wrap and the hair slides dwon the hook. How do you anchor the fly to the hook so that it does not slide down?

you could put superglue on the wrapping threads when your tying the teaser

I would add that you don't want to wrap to much stuff at the same time : one layer of fiber or bucktail, wrap, glue, then another one, etc...
And it will help the hair/fiber stay in line with the hook, not open like an umbrella, when you use long bucktail, which has a large hair diameter.

make sure you putdown a good layer of underwrap, use a strong thread( kevlar or rod wrapping thread ) and wrap tightly. and like AZ said, don't wrap too much at once.

Excellent suggestions, I will try this week. I have been wrecking an average of 5 teasers a week on bass and blues!

RIJ..
I tie rough flies on big hooks for teasers...
I use underwraps, and then cover the threads and up to the bottom of the eye with devcon 30min epoxy...
works for me....
B