.... I have my Auto ISO at the recommended ISO 200 lowest too but an upper limit currently set at ISO 1600 and it's very easy to use the ISO button to change values on the fly while shooting. I shoot Manual-mode RAW and watch the histogram as a guide. I'm happy to shoot at very low shutter speeds sometimes such as 1/250s but it depends on the subject's action.
I too am learning when not to bother taking a shot because it's too distant. Bring on that ED 150-400mm+1.25x PRO!!! I have kept my monopod in readiness!
Jeff, a very good gimbal head for lightweights such as these Olympus toys
is the Jobu Jr3 Deluxe - It's the smallest on the market but very strong. I use mine most on a Skimmer in hides and in my Kitchen Hide.
Otherwise I use a Gitzo Traveller + Flexline (same as our mutual friend Andy Rouse).
http://www.jobudesign.co.uk/BWG-J3KDLX-Jr.3-Deluxe-Kit-(with-HMJ3D-upgrade)