There is another app that will burn more than one distro onto a usb stick providing you have a big enopugh usb stick...called Ventoy. I have little/no experience with it, but from all reports here on linux.org, it works really well.
Yes, I have to try that one myself soon, Brian.
Finny, there is also multibootusb which I have used successfully, and it is cross-platform.
http://multibootusb.org/
Google up
multibootusb
and you'll find some vids on it too.
Wiz