Milt, my take (fwiw) is that if someone comes up on you in 8, either you eased off a lot going in, or he is flying. I always feel that pointing by on the back straight is tougher than the front, not only because it is shorter, but when you crest the hill on 6, you really need to be pointed in the right direction, which takes you to the left (ie leaving no room to pass).
But assuming someone comes up hot in 8, I'd still maintain my line and speed through 9, with maybe just a bit less on the throttle going into the apex, and drifting over right asap. If he is that fast, he'll be able to get by you on the front straight without any problem. As soon as he's past I'd be back on the gas hard to try and follow him
Whenever I focus too much on my mirrors and drive to someone else's line, I get uncomfortable. I think driving a good solid line and a good solid speed through the turn is the best thing you can do...that is predictable. If you let off in the turn in order to make the pass easier, you risk spinning your car, and having the overtaking car having to brake in the corner too...I hate it when that happens.