Nice job Conrad, I hope we get some of that weather here in Ohio soon! I think the focus hunting problems with your A33 might have to do with the glass mounted to it. Try a comparison between DT 2.8 & DT 3.5-5.6, I bet the 2.8 nails it more consistently. It could be the focusing mode your using too, 90% of the time I use the 1 center focus point, this go's for all 4 of my Sony bodies A200, A560, A65, & A77.
Last week I was shooting some eagles in my back yard with my A560 and a Tamron 200-500 and the 1 center focus point seemed to work well.