grammatically i believe both versions are correct... the words ending in s and possessive have been driving people crazy since i was a ruthless leader...
i'm more comfortable with the s' over the s's...what about you? let the poll decide
hopefully there will be many occasions to use it
i believe this is the most important issue with the islanders right now
that and destroying my evil nemesis... and old friend kiiiiiiiiirrrrkkk!!!!!