I'm somewhat of a stranger in a foreign land when it comes to Linux speak but after several attempts to edit the Pointer.xml file I was rewarded with cursor 2 X the original size so a win. Nothing blew up and seems a straight forward edit of the pixel variables (I'm assuming) did exactly what I wanted. I use the original skin Confluence but I reckon each skin uses a similar file.
The Pointer.xml file is read only so steps to unlock the file and also take ownership were required. A bit more involved than I expected but I managed. The file is located here:
/media/user/Storage/.kodi/addons/skin.confluence/720p/Pointer.xml
The size of 32 was replaced with 64 in all occurrences. 8 total.