In scenario 1, the guy on first would score on the double. Fast runners advance one extra base on all hits.
In scenario 2, both runners would score. Runners always move on singles/doubles/triples - they wouldn't on a walk, which is what you have described. The slow runner on 3rd scores easily and the fast runner on second is also able to score. An average runner on 2nd would also have been able to score. The ability to score from 2nd on a single is the only difference between a slow and an average runner.
You got scenario 3 correct. Both runners on 2nd and 3rd score easily on the double.
Just want to make sure im understanding this right.
Scenario #1: hit box is single double fast runners. The first guy goes to first. Second guy pushes the first guy to third second guy stays on second?
Scenario #2: there is a slow runner on third and a fast runner on second. Hit box shows a single average runner. Bases becomes loaded? No advancement for the other runners?
Scenario #3: same set up as two but instead its a double average runner. Slow runner and red runner score average runner on second?
Again i just want to make sure i got this down the right way.