Hey team, this is the profile i used to bring up 4 of my toons from lvl 87-90.
It kills Riverbank Barbshell Turtles east of Halfhill on the Yan-Zhe River.
Unfortunately, I wouldn't recommend using this profile unless you have the Azure Water Strider Mount (Anglers Exalted) because it crosses the river.
Whilst running the profile, i obtained a lot of turtle meat (ironpaw tokens, also sells well 55-80g per stack), lots of green items and from 87-90 ended up with about 20-30 Spirit of Harmonies.
Just a word of Warning, Salyin Warscout (86 elite, 1.5M HP) also spawns quite constantly in this area which gives just under 300k xp whilst rested for the kill.
The bot only had trouble on him with my Rogue which had quite substantially low gear on (ilvl 350-403).
Download here --> Riverbank Barbshell.rar