One of the most popular tiller extensions on the market for laser sailors is the ACME Fatso Tiller Extension.
This 1.25" diameter extension offers a super-light, stiff carbon fiber construction. Fitted with an RWO rubber universal and a nonskid matte finish for great grip even in wet conditions.
Can be cut down to any length.
If you are replacing the universal, the old style had a circular profile; the new style has an oblong/oval profile.