Nice video, I was mainly interested in how and to what point the jump is measured. I have never heard of and do not understand the "take off from one foot" rule. Seems pretty obvious. If my opponent wishes to launch from his hands or knees I would have no objection.

I find it easy to have a single marshalling sheet containing the information for all competitors in rows and columns for the attempted height. Your slips look clumsy. Also the heights should be recorded in metric.

Am 15 and I jump 18,10 1/2

highly informative, only your writing sucks.

deef