1. Sorta hit and miss. Ive had days where im there when they stock and its wide open. Other days where they wont bite best till the 3rd day. My suggestion to you is to go the 3rd day. That way the fish are acclimated to the water and they will start to bite.
2. As far as rigging go here -
http://www.berkley-fishing.com/view_tips.phtml?id=2091 I use a owner mosquito single hook size 10 or 12. And i prefer using a gulp salmon egg instead of power bait. And Ive found that Garlic scent (smelly jelly) put on the bait helps too. You can still fish this or do a slow retrieve with occasional twitching. At park lakes I use a #2 leader and nothing more. If the water is murkey use a 6-8 inch leader. If it is clear use a 12-18 inch leader. As far as colors ive done the best with bubblegum pink power worm and a pink berkley egg. My other go to's when pink isnt hitting is chartreuse on chartreuse and orange on orange
Hope this helps