It's easier wading at the Tea Access than Mint Spring. There's a deep pool there at Mint, and you have to bushwack through private property and across the spring creek to get to wadable water, then downstream from there it's shallow for hundreds of yards...but if you walk far enough, or find a way to make it upstream, there are some good holes. Mint is good for launching a canoe, but I wouldn't recommend trying to float the Bourb any higher than Wenkel under normal flows. Tea is not a great canoe launch, very steep. Mill Rock and Wenkel are both good canoe accesses, mediocre wading prospects.
As the others have said, the Bourb is a slow river with lots of LONG stretches of frogwater. It's better to float it than wade it if you're lookin' for smallies, because they generally won't be in those dead pools and many of them are nearly impossible to wade through to the next riffle. There are also no liveries up there that I'm aware of, so you have to set up your own shuttles, too.
The Bourbeuse is a little work to fish, but it's worth it if you're on the right stretch on the right day. Keep those spots if you catch any!