Holy crap Carl! You got some talent man! I seen shots taken with the SX30 IS on forums and they sucked because the owners didn't know how to use it, but you, wow! I'd like to see you with a Canon 7D and a 500F/4L IS :P. My favorites are the Siwss A332, LH 744 (various shots) and much more than I cannot list!
You seem to have lot's of time to be spotting and great weather plus luck!
I am not sure if this is too much noise or if the quality is just worse but I would reduce noise or stay at ISO200 next time. The shot is a killer anywho:
Not sure if you have a flickr account but post them there! Stay with Canon