The invention relates to a method for preparing optionally substituted P-hydroxymandelic compounds and derivatives thereof. There is preferably a selective electrical generation of tones for acoustically marking the inflection points of the movement and for the selective further acoustic division of the time intervals between the inflection points of the movement. The shorter leg of the U is inserted into a fishing rod holder on the T-top so the longer leg will hang down below the existing rod holder where an additional rod holder may be attached in a lower position. A time delay in the transmission of the voice of the hearing user through the relay is of assistance in the assisted user comprehending the communications session.