B.B.
Show him "soft & gentle". When he hits you, in a firm, calm voice, tell him "It is not okay to hit Mommy." Then take his hand and have him gently touch you and say "You need to be soft and gentle." This takes some practice at first, but he will soon catch on. I worked in daycare for many years, and this worked well with the kids. I started this with my son (18 months), and he understands what it means. I tell him "soft and gentle" (sometimes just "gentle"), and he gently touches my arm. Time outs don't work on my son, b/c he usually just sits in time out and plays. He doesn't understand what it means. No matter what you do, stay consistant. If you are constantly changing methods of discipline, he will be confused and nothing will work. Good luck!