My DS used to be a real sleep fighter too. If DH was home he would hold him and bounce up and down (sort of mini squats) until he fell asleep - quite a work out! When DH wasn't home (which is quite often as he's a shiftworker) I found different things worked for me at different times. Sometimes he would fall asleep while I pushed him in his swing and then I transferred him to the cot. Otherwise I would put him on my back in our Ergo (baby carrier) and walk back and forth around the house until he fell asleep then transfer him to the cot. I think the key for us was that he needed movement.

Have hope though - we can now put him down in his cot, leave the room and he just goes off to sleep on his own. It does all pay off eventually!