My son was the same way... he's just now at the point where I can do it without breaking a sweat, lol. I started letting him throw away the pee diapers in the pail, I roll them up and let him throw it away... he looks forward to that so much that he will lay down now without much of a fight. (The poopoo ones I tie up in a grocery sack and throw outside, don't let him touch those. :o)
The other thing I have done in the past is start naming things. Where's the door? Where's the window? Where's the vent? etc. for as many things I can think of that he can point to from the changing table. We do wall, ceiling, window, door, fan, light, vent, eyes, hair, nose, ears, and on and on. That keeps him occupied and he loves when I get all excited when he gets it right. :o)
~t