Cronk & Voddy is a favorite for many, sit on the grass verge before the right hander. Car parking is possible on the small lanes nearby.

Hillberry, if you sit on the grass bank before the small grandstand on the left which is just before the right hander then you will be within two feet of the riders, one foot if its Michael Dunlop. There is parking at the back.
Check this part of one of my videos, go to 11:35 for MD bit. https://www.youtube.com/watch?v=V7dEMLvyLUc

Rhencullen 10:09 in video is another spot I like, after the jump there is a wall on the left where theres plenty of space and room for some nice photos etc, just dont fall onto the track :l. Tricky to park but there are some very small single track lanes near there.

I really like some of the lesser known areas where I am sometimes completely alone, BallaCobb is one 10:49 on video above. Parking on the Ballacobb lane is possible if I remember correctly.

Crosby Jump is good too, easy parking in a nearby field, many people sit on top of their vans to watch the action, and a very friendly elderly lady even let me use her loo in her home while she was in the field serving tea, great lady.