mine on the 206cc shell is 3/4 way and on 2 mounts.
http://www.tamiyaclub.com/showroom_m...05534&sid=1470
This does seem to be prone to being ripped off (big crashes, kids feet over the track whilst watching

) but generally the lexan bends and it rescrews on with no issues.
I will be making a sign for it as well
"THIS IS A REAR WING, NOT A GRAB POINT TO LIFT THE CAR WITH"