I had a similar problem too with the driving. It is hard at first to figure out what to do in place of your seat and legs.
The thing to know is that your whip takes the place of your legs. I am a little confused on how you are using your whip and reins. When I am teaching my greenies to steer, I use my whip like my outside leg in the bend if I need him to come around more, or as my inside leg if I am trying to keep him from "falling in" but the fact of the matter is, you have to use your reins and voice a lot more than when riding...what ridden background did you come from? English, Western, H/J, Dressage? If you rode Western, life will be tricky until you can master contact. H/J not as bad, but Dressage background is the most helpful. You will also use a lot more voice than you may be used to if you rode Dressage. They never let you make noise in ridden Dressage, but you can talk to your horse in driving.
I am also curious if your horse is being driven in an open bridle or one with the blinkers/winkers. Not that you cannot ground drive in an open bridle...I have, but the blinkers have their place for helping focus on certian students. Also I would wonder if you were standing with a halter and your whip, does your guy understand that he is to move away from your whip (leg)? When you are just starting the ground driving, it helps to run the reins through the shaft loops until he gets it. (I should have read the book first!
) You can move into the terrets on the saddle later. It helps with the spinning-around-to-find-that-voice-back-there move. If you cannot find a good driving instructor, a Dressage (ridden) is a good alternative if you are having contact issues.
<----me getting on my sopabox are you ready?
As for the gelding situation...if your guy is registered, did you know that there are lots of incentive programs for the geldings? Kids get scholorship money for geldings, not stallions. Besides, you did not buy him to make money did you?
You seldom make money with horses! There are so many nice foals and horses out there right now...the economy and droughts are forcing herd dispersal sales and super nice horses with show records are selling for hundreds...not thousands. I have had, and still have a stallion. I get the thoughts about keeping them intact. I guess it just depends on how reliable you want your guy to be. (You did say you were trying to getting away from injuries by getting into minis)
My first horse vet told me this when I was thinking of keeping my first horse a stallion (My dad wanted me to so I could make money because he had awesome papers...he was a Peruvian Paso
) "A stallion loves a mare, a mare loves a baby, but the gelding loves you." I ignored him until my sweet yearling watched a mare get teased across from him and he changed overnight.
I wanted my sweet baby back so I had him gelded.
Removing that second brain just simplifies life so much. In the end it is up to you, but I know of very few people who don't own their own stallion, so there is really not a lot of money to be made with them. Most of my friends "share" their stallions and so there is no stud fee paid. Ask around and check out your local market. You may be suprised to find that the benefits of stallion ownership may not be as great as you had hoped.
Not trying to burst your bubble...just been there and done that already.
Leia is right when she says a good stallion makes a great gelding. Think of it like this...if he IS that awesome, and you cut him, you will be competing in the classes with many "culls" since everyone seems terrified to cut any mini stallion, but especially a nice one, so your awesome gelding will outshine them all.
Just a thought...coming from someone who has given away Buckaroo grandson (stallion) and foals from World titled stallions because they just aren't selling right now.
I don't imagine that you would be keeping him intact if he was 17 hh...papers or not! Just sayin...IMHO