Complicated FOF

After many months of ignoring SRB2, I loaded up a small sky-themed level I was working on. Long story short, I need an FOF that is only solid from the top, acts like a trampoline, and moves up and down.
In attempting to do this, I made a bouncy FOF that isn't tangible from the sides, but is tangible from the top and bottom. I have checked my tags and linedef actions (can't remember what those are actually called) and nothing is solid from the bottom, yet it acts like it in-game. How do I make this do what I need it to do?

So do you basically want a bouncy platform fof? I think all you would need to do is make it a "Moving Platform, Intangible From Bottom" and make it have a bouncy sector type. Make sure that you have the latest SRB2DB config for 2.0.x, because the 1.09.4 ones will not work.

Ooh, that helps. Quite a lot in fact. But if I could make it intangible from the sides too, that would be cool.