Demographic changes are altering the Peninsula's sports landscape big-time. Public school coaches are faced with a declining number of football types from Daly City to Mountain View. The situation is not going to improve much. All of the signs are negative. Coach Sell no longer had a roster brimming with big, strong, fast fellows in relative abundance. Those days are long-gone. The program has been reduced from an A league entity to a B. Burlingame is in the same boat. Mills has been in serious decline for years. Terra Nova, El Camino, Jefferson and even Half Moon Bay are suffering. South San Francisco has resurrected itself, up to a point as a C league outfit. It's not pretty.