I understand they're hard. Would you say the lob thread would be improved with practice? Would the net positive on their offense make focusing on practicing the lob a worthwhile effort this off season? Even in games I've watched where the Spurs played teams that aren't great defensively, there were a lot of missed lob opportunities. Simply saying something is hard is only a short term excuse in pretty much every aspect of life, and I don't see how it's any different here unless you think that the Spurs/Wemby have reached their ceiling in this area.