Has anyone ever tried this methode (that I have used on a few occasions).I put the tiller extension between two toes then use two hands to double block the main.Make sure your helm is fairly neutral before trying this.Also when my son is helming(14 yrs. old)I will work the main from the crew spot.In fact this is the sheeting arrangement I used when racing the hobie 18 in good wind.You have to have an experienced crew to trust on the main.