Here in the UK after you have completed your RYA Power boat level 2 certificate (which is mandatory prior to driving any Club safety craft) you can then attain your Safety boat certificate. During this additional course the RYA prescribed method for up turning a turtled Cat is from the side. The safety boats toe rope is tied to the Cats righting line which should be fastened to the mast foot and around what will be the high hull (windward once the cat is upright). The complete length of he toe rope must be longer than the mast our somebody will get a nasty headache if the Cat flips. Once this has been done the safety boat uses enough throttle to turn into the wind and then applies more throttle to eventually get the cat on it's side and then into the upright position.
At Mumbles we wouldn't hold a race unless there is at least one safety boat on the water plus committee boat.