A really big problem I have when performing with my double bass, is that the endpin keeps sliding on the floor. Unless there is a carpet or the floor is grainy (or something that isn't slippery), I have to keep the bass from sliding. This is really tiresome, because I have to actually hold the bass, not just balance it against my body. At home I have a carpet on the floor, so this doesn't happen.
Is there something double bassists use on the live shows to prevent the bass from sliding?
Googling Bass endpin ferrule
brought some simple
https://www.caswells-strings.co.uk/product/double-bass-endpin-ferrule/
and some not-so-simple
http://www.superspikes.co.uk/bassspike.html
answers to the slippage problem.
UK bias because that's my home country.
Also you can search for a "rock stop" which is a larger puck of non-slip rubber with a metal cup in the middle that your end pin sits down in. Probably goes by multiple names, but my son (who plays cello) has a couple in his case that he uses quite successfully to keep his cello in place while playing. I'm sure the same would work fine for a double bass.
What you're looking for is called an Endpin Anchor or an Endpin Stop. There are many types, from simple rubber ferrules to cups that attach to straps that can be tied off to a chair or whatever else.
I have seen cello players tether their endpin to the chair they sit in with a short, looped rope. Since you stand, maybe you can put a foot on the other end. Just an idea.
A simple beanbag will also work acceptably
