I just toss the hops into the fermenter when dryhopping. I love it!
As far as not-clear beer, there are several causes. First, not chilling fast after the boil can leave a haze, as can not getting a good "hot break". Some ingredients, like wheat, leave a protein haze. If it's a mash, and there isn't proper conversion, it can leave a starch haze.
I guess to fix a cloudy beer issue, we'd need to know what kind of techniques you were using (AG, PM, extract), if a nice hard boil was reached, if Irish moss or whirlfloc were used, if the wort was chilled rapidly, etc.
I really like kettle finings like whirlfloc or Irish moss, and I get super clear beer without any other work at all. No cold crashing, no gelatin (have vegetarian friends), etc.