I used some of the Berkley Gulp worms this past year on some bass and I had great luck! I was actually able to catch a few bass during the mid-day period when it was in the mid 90's outside!

The only problem I have with them is that they aren't as durable as a regular plastic worm, but, they do produce more fish! Heck, I caught a nice 19" smallmouth bass on one that was just sitting on the bottom, and that was at about 12:30 in the afternoon!