I revisited this one, since it makes me cringe to read now... and tried to re-write it, so I thought I'd post the edited version here.

One sunny summer afternoon,
someone set up a game--
a line, suspended in air--
jumping it was the aim.
The line was set up--
high, taut, and tall.
While the long-legged won,
the short seemed to fall.
The outcry was responsive--
defiant and loud.
"Why spoil the long-legged?"
came a voice from the crowd.
"Set the line for the young ones,
the inflexible, the short.
The long have advantages!
In this, there's no sport."
The game leaders gathered
to consider the voice.
They changed their system,
feeling no choice.
The line was lowered,
very close to the ground--
so simple that even clumsy
could join, leap and bound.
The crowd was most content
and sat to watch the game,
but soon saw that though fixed,
there wasn't an aim.
Many new competitors played,
and abilities were made plain.
Though all were able to jump,
quality wasn't always obtained.
The game turned to circus--
with millions of skipping men--
Some flew, others bumbled,
but no one could really win.
The silliness of the few
caused the crowd to depart,
and the very talented leapers
were snuffled in their hearts.
Eventually, the game came to stop
as no one was there to judge.
It was hard to tell who did well
when the awful wouldn't budge.
They tried to lift that line again,
but it was much to hard to raise.
Lowering it had taken seconds,
but raising it took days.
They started to played again that day
and refused to let the line budge.
And while the games were happening,
a crowd came to clap and judge.
That's how things got better.
The skippers watched and learned,
they studied the talented leapers
and eagerly awaited their turn.
The past became past quite quickly,
the history an ignorable haze.
So always remember-- when a line's down,
it's near impossible to raise.