I shoot eagles at Conowingo Dam and am always in Tv at 1/2000. I let the Aperture and ISO float, only going into manual if there is a strong backlight situation. I have my M-fn button programmed to the custom modes where, C1 is 1.6x crop, C2 is Av (FF) and C3 is manual FF. I can then cycle between Tv, 1.6, Av, and Man with the push of a button. I did shoot with a monopod, but it made tracking the flyers a challenge, (try tracking a flying eagle from in front to overhead and behind with a monopod without tripping. LOL) and with IS and IBIS found I didn't need the monopod.
