This time of year I think most guys follow the crappies up the creeks. Who follow the shad up the creeks.
There is lots of info on bachman if you search esp. the bank fishing section.
Bachman is weird. Most lakes including White Rock Lake--the crappie go up the creek
Bachman--they seem to not make it past the floating buoys behind Whataburger.
Think I remember a post from Rudy one time that said in all the years he's fished Bachman, he's only caught less than a handful in the creek.
My theory is that the upper Bachman creek is so clear, that the water temps are colder than the concrete and grass rich environment behind the Whataburger/bridges/culverts area.