mikfoz
It's not a competition. Watch the birdy!
Don't know if anyone else has tried this yet but I find it adds extra stability when hand-holding, shorten the strap that came with the lens so when the camera's against your face it's drawn tight against your shoulder, bit like a rifle sling, certainly makes a difference for me.
Here's a few shots from the local park today.
Little Grebe - 1/320th @ f8, ISO 400, -0.33EV, 500mm
Jay - 1/400th @ f8, ISO 400, -0.33EV, 500mm
Blue Tit - 1/800th @f8, ISO 400, -0.33Ev, 370mm
I'm sure this tip works.
A lot of people also need to be aware of how much a person sways when standing with feet side by side. Spread your stance and have one foot in advance of the other with feet at a lazy right angle. You should tuck in the elbow of your camera-holding arm (usually the right) and similarly with the steadying arm - both arms can and should be braced against the torso so you're literally shooting from the hip. Most camera shake is due to a poor stance and casual camera-holding technique. You can get away with it at 50mm and 1/2000s so people keep the bad habit.