Hello DAR,
Glad to see you are up trying out your plane in different flight modes.
I used to own a 150 and they are probably the most underated plane out there. They really are a great machine in my opinion. Try doing a falling leaf.
What you do is get a lot of altitude... put the plane in a nice gentle stall. Keep the yoke back, all the way, and dial in a bit throttle. About 1800 rpm. Then as it wants to drop a wing use rudder to keep it up but... over rudder to make it bank even more the opposite way. In other words it will drop the left wing give it full right rudder and allow it to bank untill you are at least as far to the right as you were to the left. Repeat until you are ready to recover.
It is a great co-ordination exercise all though it would not be considered aerobatics it requires a lot more skill than looping or rolling!