Goodness I'd love to join you and your first post already helped me! I'm Megan & my DS, Austin, is 31 months and he is my first, so I have never done this before. He has been part time on the potty since 18 months, but is still nowhere close.
Our frustrations are countless - there are weeks where he will go on the potty all day everyday and weeks where he will literally scream just going IN to the bathroom. We are really trying not to force him, and to just let this be a positive thing for him in his time. I have a new DD who is 10 weeks and certainly seeing his baby sister in diapers has been a huge step back for us. "Me baby too! Me baby, mom, need diaper" - Ughhhhh! So right now we're really working on encouraging all things "big boy" and "big brother". Also, he had the flu in February, and though he got over that, his digestive system never returned to normal and he is having bouts of diahrea and constipation which makes learning really hard! Becuase sometimes he doesn't know he has to go, and sometimes he has to go and tries really hard and just CAN'T. It's awful. So he is now seeing a GI doctor and hoping to get this stuff worked out so we can get back to learning.
DS wears waterproof training pants at home (I think they are Gerber? I'd have to check them... we got them at Target and they look/feel just like regular underwear everywhere except that middle liner.. I love them). He wears pullups in public, mostly because if he leaks, it's kind of impossible for me to clean him while I have DD and all of their stuff, by myself! He also wears pullups at night, although I have noticed he is typically dry overnight. Any leaks usually happen mid-day. We do books and stickers on the potty and that works pretty well. He definitely needs to be distracted. We also just use TONS of positivity - high fives, hugs, kisses, telling Dad all about how many times he went potty and didn't leak when he gets home, etc.... The more excited we seem about the potty, the more excited he seems too.
I am glad to read what you said about "It's potty time!" though... I think I need to start doing that. Because I ask him and he says no, even when I know it has got to be time. Recently it seems like he is afraid to go poop on the toilet and I think that is because he is afraid it will hurt (due to current GI issues).
...... Children DO eventually learn right?! Haha.