I took a good look at the jumps that Mary (OandO) posted.
Divine, I also looked hard at the gate that jumps bad.
I think I know the reasons why it does not ride well. I am studying how horses judge take off, and what they actually see vs. what the rider sees and thinks about.
I would change a few things about that gate that would possibly make it a bit more horse friendly. First of all the horse sees it in a flat plane and not in the three dimensions that it is attempted to represent. The plaque or sign on the backside of it (you can see it through the top two slats) contributes to the confusion as do the too-large flags (they should be smaller in diameter to distract less). Flags should never be such a large portion of the obstacle that the horse assumes they are part of the fence. Flags need not be large and obtrusive, in fact, only the rider really needs them and then only with skinny’s, etc. I don’t decorate flags or drape things on them or hide them. They are of course required, but it is very hard to make red and white attractive!
Back to the gate: two ways to go here. Either make it a vertical - straight plane - or make it a softer rounder cross country “fly” style jump. There are a few things that make it sort of half of each and I suspect that’s why it jumps badly. By making it look more filled it confuses the horse. I think if you wanted it just a vertical, the ground line should be removed and just a thin strip of dark mulch laid across the ground along the entire face of the gate.(I would decorate the WHOLE fence not just the portion between the flags.) The plaque or sponsor sign on the backside that shows through the boards should be set where it doesn’t block the boards and make the gate look solid. The flags should be smaller and less a part of the jump. You would want air to be seen through it so the horse would know it’s a gate, upright, and landing on the other side is flat. You would want the rider to prepare for it like a vertical – adjusting downward to a “popping wheelies” canter. (Think of this - you are in a warmup arena with only one fence, a single pole vertical with no ground line set at 3 to 4 ft. How would you develop the canter for that jump? That kind of canter.)
Or the fill on the bottom could be increased and placed two-three feet out with a planter expanded and the outline softened on either side with shrubbery up to the top board. That would increase the parabola and force the horse to take off earlier and make a rounder, flatter effort, more in line with a longer flatter gallop stride.
That’s just my opinion and not sure if more educated and experienced would agree but if you can imagine what I am describing, what do you think?
I’ve taken the liberty of photoshopping the gate to what I think it might look like if I were told by the course designer to make it vertical.
https://www.facebook.com/photo.php?fbid=907905402570270&set=a.907900422570768.1073741838.100000524562748&type=3&theater
It’s a bit fuzzy but you see I’ve removed some things, put the white flag behind the dark edge of the gate and tried to make the left flag a bit lighter looking. I’ve removed all the stuff on the bottom and tried to put some “fake” mulch across the bottom. You will see that it now looks vertical and there is no question as you approach this you will ride it like a vertical. (Sorry but this is really fun. I’m using just Picasa to muck this up…wish I had photoshop!)