Top tip: From Bonawe you could climb up Gleann Salach until you reach the junction with the forest track that leads to Am Maoilean. Follow forest tracks west, with a couple of stiff climbs, until you reach the junction at NM932383, head north at this junction and follow the probably very well used road which leads to the Beinn Lora forest walks.
Double back on yourself and take a quick detour past Lochan Nan Ron and follow the path to its end at a stile and picnic bench, if its a nice day you should be blessed with a view of Connel Bridge, Connel International Airport and maybe even Cruachan (I forget if its visible from that viewpoint). Follow the path back down and detour up to Eagle's Eyrie for more views of Mull, Lismore, Ardgour and Loch Lihnne. The track then plummets down the hill to Benderloch, which is a short 10 minute cycle to Connel Bridge (I think there's even a cycle path now that takes you the whole way).
This is the hilly, off road alternative to following the road along loch etive side, which is also a beautiful ride. Just be sure and check with the local Forestry Commission about logging on Beinn Lora, most of the singletrack has been obliterated but I think the main walker's path is still intact.