Laser, among the strictest one-designs in the world in most ways, does not restrict the tiller and tiller extension. Many, maybe the majority of Laser sailors use a $200+ carbon tiller and $100+ carbon extension, including me on my 1982 beater that leaks. Why? They're stiff, providing great feel. They don't bend or break. Before I got my new extension I had to straighten out my aluminum extension after every breezy day.
Despite the fuzzy language if anyone showed up at a one-design event with anything resembling the carbon CCI tiller (linked above) I'd call foul. Equivalent does not mean unrestricted.
