So, I know that many fighters have a dominant hand - most of those being right-hand dominant. Some people can switch (especially those who have been fighting long enough to know the benefit of this), and some are left-handed and fight that way.

So here is the point and question - I am a right hand dominant person, who usually fights right-handed; however, I have suffered over 10 dislocations in my right shoulder over the years which has resulted in a lot of tear damage. So - what are some good basic training ideas that people might have to work on making the "off-hand" more of a dominant choice?

Aside from just getting out and fighting with your off hand more frequently, doing pell work can be a great way to build muscle memory.

First off, see if you can organize an off-hand bear-pit or sparring line at your next practice. Practicing against other people who are also using their off-hands can make you feel a lot less uncoordinated when you're first starting. Off-hand only fights can be fun (if a bit silly), and it's a good thing for everyone to practice if only for when you have to switch hands after being armed. Start with just single-blue, then move on to sword/bat and board.

When you're on the field, the best way to get off-hand practice is to fight Florentine. You get some experience swinging a sword with your off hand, but you can still defend yourself with your experienced hand if you're in a tough spot.

You could try lopping off your right arm, then lopping off your left arm, and gorilla gluing your left arm into your right socket.

Although I suppose you'd have to be pretty good at lopping and gluing with your feet, if you go that route... Better start practicing now, maybe you can get it together for Geddon.

The way I see it, you should be able to get at least one functional right arm with all the parts you've got...

also you probably want to try this one last.

tl:dr, I have no helpful advice beyond the above posts, which contain very solid suggestions.