Conventional Rod

The guides on a fly rod are too small for a spinning reel, and the reel seat is too small to take a baitcaster. However, I use a small Shakespeare Synergy triggerspin reel on my own 8 1/2 foot fly rod and it works good. If the butt section were a little longer, I'd love it, but it still works fine.

EDIT:
I use this "combination" a lot for crappie with the Float-'N'-Fly and small plastics with other sunfish. I had 2 pound mono on the reel the first time I set it up... took it to the lake when the shad were running thick and was hoping to get into some slab crappie. Turns out there were no crappie under the dock, but it was sure a shitload of fun fighting bass that were two and three times the weight of my line. I landed them, too. I've switched to 4 pound mono since, though.

I see the Thumb Bandit Posse is at it again... either that or fly fishing purists...