THE BEST SIDE OF D4

*Why "D4"?  I generally get asked,  and receives jumbled with A5 (that's a climbing grade), and D5 (which stood for "Deuce5"), two brand names I have been associated with in past times.  My nickname in Yosemite was "Deucey", coined by Grant Hiskes  who mangled my Friesland ancestral title "Middendorf" to "Dusseldorf",  and Deuce4 is my recent