MD - Unless you are in an area with a large concentration of bears its gonna definately be a hit and miss thing. If I were you I would look for a good size clear cut and a good vantage point to watch it. If you see one feeding you can try to determine which way he is heading or plan a stock.
I haven't taken as many as Lee but the ones I have taken were all taken on known travel routes while I was on stand. Only one bear I shot I actually snuck up on.
And as for killing them, I've found that they aren't to difficult to kill. IMO a whitetail has more tenacity to life than a blackie. The farthest any traveled after being shot was about 50 yds. I've used a 30-06, 300 WM and 45-70. I like the 45-70 the best, especially for short range.