This is good advice, and I think I will approach the situation in a similar manner. Since we've played already twice, copying your tactic might not work since we know them pretty well. I think I might have some tea with wife one afternoon and speak to her about it.
I just don't him to have "confidence" problems over it -- since he seemed somewhat nervous and intimidated the last time which really slowed his member down
, having said that we are experiencing a lot of "firsts" with them - so i know things will change as they become more accustomed to swinging.