I have not been tying that long and am far from an expert. So...
One thing that I have found that helps me prevent slipping is to put a small coat of head cement on the wire once on the hook. I usually will spend a little time putting lead on hooks before I start the actual tying process.
If I really want to weight a hook down I will put one layer of wire on (7-8 wraps) and then put another 4-5 wraps toward the front, but not all the way, of the initial wrap.
The weird angle can likely be corrected by less wire toward the hook bend.
I would also stay out of the Fat Tire while tying.
Hope this helps.
jasonkelkins at yahoo dot com