Hi Carl.
Your thread got my attention. First because I too have this lens and I recently had gout. Ouch!!
I bought this lens over a year ago for a March trip to Maui. I was hoping to capture some shots of the whales from my walks on the beach. This was more than a challenge as although the whales are numerous at this time of year, you have to be at the right time, I mean within minutes, to catch a whale surfacing close enough to get a shot. My whale shots, even with this lens, was like a "where's waldo" picture. Anyways, I have not used this lens since. You have inspired me to take it out and give it a try with other subjects.
Thanks.
Dr Bob