Games : 2 PS3s one profile?

So I have a ps3 (which has all my saved games on it) and my boyfriend has a ps3 (that the kids play, I don't have a profile on there yet). Neither of us have a PSN account. Is there an easy way to have it set up so that I can play on my ps3 (say in the bedroom) and save a game, then 10 mins later play the same game (from the same save point) on his ps3 in the lounge? Note, most of the games are LEGO, Little Big Planet etc, so I'm assuming they are copy protected, and I'm hoping I don't have to keep transferring data via a flash drive (or would this wipe other profiles on his ps3?) Thanks in advance