Last year I started motorsport photography and I love it! I only did a few events at Silverstone and was fortunate to be at Goodwood FOS with work but I've been bitten by the bug. This year I'm looking to do more events at more circuits and was wondering peoples views on whether a super zoom (Sigma and Tamron (150-600) or Nikkor (200-500)) would be a useful addition to my kit. Currently using a Nikon D3100 with a Tamron 70-300 F/4-5.6 Di VC USD and had mixed feelings on it last year. It was perfect at Goodwood where you can get close to the action (even 70mm was too tight at times) but at Silverstone I felt a little more restricted at the 300mm end of the lens. It was fine around some parts of the track but struggled at others when gaps were a long way from the action or where the catch fence was in the way. As I am looking to do more circuits this year (Brands Hatch and Donnington are definitely in the calendar) are there other circuits where the super zooms are a good addition or is Silverstone an anomaly with the amount of fencing etc due to its F1 status? Also if there are any other tracks that are highly recommended I'd love to hear about them.