re: Past moonwalks
Truthfully I think this study by Mary Connors, Dean Eppler, and Dan Morrow, is far more interesting than the space.com article you site.
Interviews with the Apollo Lunar Surface Astronauts in Support of Planning for EVA Systems Design
http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19950005492_1995105492.pdf