Sorry if my tone was a little harsh, blame it on Monday grumps.
I tend not to shoot tilted, unless I'm bored, my reason for not is that tilting can be usually be done afterwards, but its a lot harder to straighten a tilted shot. GaryP is the master of the tilted shots.
Sports mode, if thats what you're using, is fine for sports where freezing the action is important, eg most sports involving a bat or a ball, swimming, running or jumping, possibly horse riding, but motorsport is the opposite. You want to retain mostly sharp images, but with blurring to some parts - usually wheels, and the range of shutter speeds used is going to be from maybe 1/60th second to maybe 1/400th second - and shutter priority mode is often a good mode to use. If you can't see much wheel then you can get away with a higher shutter speed.
Mallory doesn't have much in the way of catch fencing, and being quite a small circuit you can easily move around the whole track, and apart from the central spine that leads to and from the hairpin, the only difference between a public ticket and a media pass is simply between 2 to 6 feet
I quite like the shot you can from the outside of the Devil's Elbow, close to the fence, but you need very quick reactions and a pretty short lens, especially with single seaters which take this corner absolutely flat. You can also go to Gerrards and a panning shot with the lake in the background, and there are some good angles at the Esses, both infield and outfield.