Our new-to-us J/109 has a robust transom swim ladder that could definitely enable someone who fell overboard get back into the boat, at least in smooth water.
But check out the photo above: There’s no way for someone in the water, particularly wearing a lifejacket, to deploy the ladder unassisted. The angle is just wrong for that.
So I made the modification in the photo below. Works a treat.
I will be writing more over the next year about changes we are making to the boat to reduce person overboard risk, in our Online Book on the subject.