weightless worm rods
The M is a bit stiff for weightless (my opinion), but is great for cranks & craw jigs. Being mainly a musky fisherman, I prefer the longer rods which is why I went that route.
An 8 footer is going to be an unusual size, especially for bass fishing. I'm curious and ask because I hear weightless worm and immediately associate it with bass fishing, but I almost get the feeling you are talking about gills or eyes...so the actual targeted fish species and technique within would be good to know as it would make for vastly different types/styles of rod.
I have a 7'4" G Loomis Bronze Back I use mostly for throwing weightless worms.
If you really want 8 feet, i would look at St Croix In Shore fishing rods... VIS80MF