After my daughter gave us a hard time transitioning from the potty seat to the big potty I threw them out because I didn't want to have to go through more trining for the big potty.
So my son was trained on the big potty. We just had a stool there at all times. We did the sit & pee first. It just made sense to me as a women and my hubby had no real hand in the training - unforunately! So I just instructed my son to "point the 'dude' into the pot" and it worked well. When he was almost 4 we tried to get him to stand as he could now reach without a stool. He didn't want to until he accidently walked in on his friend peeing while standing so he wanted to do it. And he did. Yeah, his aim isn't the best, but it isn't on the walls, just the rim, so i can deal with that. HTH!
A.