I've been very busy with two moves and keeping up with orders the past two months so I haven't had a lot of time to keep up on the forums. I usually just place the dry hopper in the keg without any shaking involved. I don't agitate the keg or the hopper when I remove the strainer. I don't keep the strainer in the keg while serving beer. If the strainer sits at the bottom while serving beer, you'll have a high chance of the dip tub pulling hop material into your glass. The method I've been using has been successful with only little material with the first couple of pints which is expected. From what I've heard, there's no need to have the hops sit in the keg for more than a week because of the chance of putting off grassy aromas or flavors. I haven't had but maybe a few people that's had this problem. If it continues to grow, we can always go with a finer mesh but these are also being used as a hop strainer for the boil kettle as well. http://www.stainlessbrewing.com/Dry-...kit_p_167.html
Going to fine would increase clogging and possibly decrease hop utilization.