Well frick. So the options are:
-Move to corner out of sight.
-Use an Addon.
-Set up a basic macro to hide/unhide
Hey check this old Kennie post for a /script:
If this is still called CompactArenaFrame, then perhaps this works in macro:
/script CompactArenaFrame:Hide(); <== but ya gotta click that every game and I think the /run Kennie has above is every login, could set up a small addon, though with it, if it works. I have 2 I use for spell woosh and custom UI Scale a bit below .64, not too hard.
Edit: that /run Kennie posted there seems like a solid solution now that I think about it, if one doesn’t want to bother with a small addon and it’s just one press/login (assuming it stil works)…well, maybe the absolutely easiest is just moved out of sigt.