If it flies it dies
"My guns will be pulled out of my cold dead hands, with the bolts locked back, the barrels smoking, and a pile of empty magazines and brass at my feet. "
"kill em' all, let God sort em out."
The pic quality with that camera and fast lens should be outstanding something is not quite right with the background and like I said there was quite some noise...maybe the ISO should be cut back to say 100-200 and maybe cut back on the contrast setting check your AE setting as a f2.8 could get you +3 E. Which metering function are you using. Are you using a VR lens or are you freehand. Anyways the composition is great, by the way with that many shots you should have the sensor filter cleaned..you will notice a considerable difference in IQ. You are getting great action shots. My subjects lately have been lifeless and lazy A polariser should help with water shots