Senkos are a type of plastic worm. Possibly the most famous soft plastic ever, they are known for falling horizontally instead of vertically with just a little wiggle. They were on sale at dicks as of tuesday. Its probably the only soft plastic I buy from a brand name and pay the little bit extra for. There are tons of color options and the saying 'match the hatch' applies here.
http://www.wired2fish.com/gary-yamamoto-senko/
http://www.tacklewarehouse.com/Yamamoto_Senko/descpage-YAS.html
I almost always rig them texas style weightless but I grabbed some wacky hooks to give that a shot this year. If you just want to break your funk I would suggest 3" but I believe most people fish the 4 or 5 inch.