DS went into a double futon mattress on the floor at 12 months - he refused to be in his cot and would wake screaming blue murder every time he rolled into the sides. He'd also try to climb out and would get his leg stuck between the bars. Once he was out of the cot his sleep improved dramatically.

When we moved house we got him a single bed and a bed rail, he can get in and out as he pleases but can't roll out. When he wakes (whether it is for a feed or in the morning) he just comes to find us.