I've got them on shepherd's hooks. Our Wild Birds Unlimited recommended the baffles as well. I just haven't purchased them.
The bees drank all my hummingbird food. Never saw a hummingbird.
I'm not sure that shepherd's hooks have enough of an 'angle' to allow a baffle to swing freely. I've had some squirrels shimmy up the pole to get to the seed in the winter; that's when I just start putting out the dried ears of corn....
We used to have *tons* of hummingbirds that would come to the feeder at home. It did take awhile for them to really notice, I think, though.
I've thought about setting one up here. It'd give the kitties something to watch. ;-) But there are so many yellow jackets around that I wonder if it'd just cause problems.