He's ok, I've just started bringing him veeeeery slowly back into work. He's lunging fairly sound but at the moment I'm only giving him 2 mins each way in trot straight to the bit so I guess as I build that up I'll see whether his hock is going to cause him grief again. Hoping that it won't as I'd really like to get him back into work.
I haven't done a hell of a lot of hacking so my advice for presentation isn't going to be brilliant haha! But I'm guessing it's for a pony club thing? If so, they're not so strict.
Really there's no magical tips that I can give you, just the basic rules of a neatly presented horse. Make sure you wash him a day or two before the show, use conditioner as well as shampoo then rug him up to the eyeballs. You can use a conditioning spray like cowboy magic once he's dry which will keep the coat soft and shiny.
Condition the tail thoroughly and brush through gently with a wide toothed comb, then rinse. Wait until dry and spray though with no knots and brush through again, then bag.
As for plaiting, I usually plait down the night before the show then put a skinny hood on overnight to keep them in place. The morning of the show I'll roll them up and either stitch or band them in.