An improved valve for use in a hydrostatic drive apparatus for a vehicle such as a zero turn vehicle. A method of attaching the keeper to a fishing rod blank aligns it axially with the open end toward the reel seat and applies silicone type or an equivalent waterproof fastener means around the fixed end and the rod blank. Grouping is based on an operator node that is a parent of the at least some nodes. The two lines are terminated by an open circuit and are coupled electromagnetically to the common slot of the two antennas so as to enable a phase difference to be introduced between the electromagnetic signals of the two antennas when the connection is switched from one line to the other by means of a switching device present on the connection lines. Silicon may be deposited on the CMOS trench oxide utilizing epitaxial lateral overgrowth.