Tune UP
I put a pillow on the battery and climb up on it, both knees on the battery facing the windshield. You can get your arm in there. Otherwise I've also done it from underneath the car, again it can be done with just the wrench and socket.
I always found it easiest to jack the car up, get under the car, and reach up from under the car. There just isn't enough room (I think) with the coil packs on there to get at #8 without getting all cut up. Now if you remove the coil packs then you can get to #8 from the top without any problem but to me it's much faster to jack the car up than remove the coil packs. 
