@bryan, this is really a great question. Probably one of the questions I hear the most on the court, from new pickleball players. I feel like there’s no other sport where a double-hit is okay. But I love that in pickleball, it IS okay b/c it’s saved me many a time 
Can you elaborate and provide a clear definition for what a “carry” is, in pickleball?
Also, one more note @smcshinsky and @bryan
The head ref of the PPA tour, @donstanley7189, just finished releasing the complete Pickleball Rules - Official USAPA/IFP 2020 Pickleball Rulebook here on the Pickleballist forums.
The tool is really convenient at helping you “search” for rules and also provide links to others when you are referencing any of the rules from the official USAPA/IFP pickleball rules. Check it out, and let me know what you think!