What would be the proper length (in feet) of a 2, 3 and 4 stride line for fences that won't be set above 3 ft?
I'm used to walking/setting for jumps 3' plus, and am having a bit of a hard time getting the lines to work when they are a bit smaller.
How large of a horse are you riding? Do you want them to be forward, or a bit more collected? My trainer will set different lengths and have me jump a 4 stride *that's big for my guy, in three. Just figure out what size stride, and remember to take away 1 stride total for the landing/takeoff.
The lower jumps do not let the horse carry itself into the line like a bigger jump would and they end up having to rush out or add.
So move them in. The chart above is good for reference but have a ground person watch and just set to where your horse is comfortable.
Absent the chart I figure to either just shorten the stride up for the whole course and add or shorten the line about a foot for each 6" in height. So the 12' step at 3' becomes 11' at 2'6" and even down to 10' at 2'. But that depends on your ring and is never etched in stone.
It's about letting the horse jump it's best, not creating a problem they have to solve by changing pace within a line. So you need somebody to watch you willing to move them in or out as suits you best.
When opportunity knocks it's wearing overalls and looks like work.