What would the try-out be for 11B in a Cav Scout unit?

Never heard of such a thing. I’d recommend learning and becoming proficient in your chosen craft at this stage of your career.
Just the opinion of a salty old NCO that’s been both Cav & Infantry

It’s not rocket surgery and anybody making it seem that way is an idiot. Be good at you MOS and then some and you’ll be fine.

Sounds like a "filter".

Only thing I’ve ever heard of similar to this was tryouts for the infantry scout platoon in 2-22, not for cav scout units. But I’ve also never been to Campbell so idk

The tryouts are probably pretty similar. But theres a pretty big difference between the charlie troop and an infantry battalion scout platoon. I lost a few good prospects for my scout platoon to the charlie troop, couple months later they had regrets. That's just one bde though, experiences may vary.

cav al the way

I reenlisted from 11b to 19d

Yes, they do this. You will most likely be in the one company of infantry within the cav squadron.

If you want to be a scout that bad reclass if you get the option. If you want "hooah" schools in any way; stay 11B.

Probably for a sniper section...that’s what we had for our 11Bs