You need to ride with forward impulsion to clear verticals...they are higher naturally in the middle requiring more effort from the horse to clear them.
That in turn means you need to be better balanced and off of your horses front end and your horse pushing himself from his hind end forward and not pulling himself along on his forehand.
If you are better balanced you would not be falling off so much...sorry.
It takes time, work and co-ordination from you and also with your horse to achieve these goals...not overnight does it come to many.
Work on securing your seat, building your core strength and riding to the base of your fence with a instructor helping you so you don't learn wrong and then need to learn it right and fight yourself out of your bad habits.
I would suggest forget looking at "high" verticals and just do a crossbar maybe 18" high that you raise just one side on to make that vertical.
When you master the approach, arc and landing of that then and only then do you consider higher or more difficult fences.
Till the groundwork of your riding education is strong your lack of support in balance is going to create problems every time you want to advance in difficulty...fix those holes now.
Trust me, I had many holes and because of those holes had a weak foundation that needed to be torn down and rebuilt, it was very difficult to unlearn bad habits from compensating for a weak foundation...better to have a strong foundation and then build...safer too.
Remember too that doing verticals also needs a take-off and a landing pole either side of the jump appropriately placed to aid the horse and you in "seeing the spot"...again something needs learning and guidance from a learned eye and instructor to see yourself...
Last edited by horselovinguy; 01-02-2014 at 10:38 AM.