I do wish people would read the F16 class rules more carefully (or indeed more often).

See rule 7.5 (rather a definition)

7.5 Overall width of the platform

The overall width of a platform corresponds with the horinzontal distance between the verticals passing through the extremities of the sides of the platform, with the boat being levelled on it's waterline and excluding protruding daggerboards, rudder blades or tiller bars. When wings are being used than the equivalant overall beam is determined by measuring the overall width including only one fully extended wing.


Therefore the answer is ; No T-foils can never break the width rule


For other important definition look at this pagem:

http://www.formula16.net/content/view/17/39/lang,en/