Created to make it easier for pilots to think about getting on
with the race

http://www.hgfa.asn.au/Competition/gps/OzGap2005.htm

OzGap 2005 is simply a time based Arrival Points system that
constitutes ¼ of the available speed points, that means that if the maximum
Distance Points available is 600 points, 300 will be available to speed and 100
points will be available for arrival points. The rate at which the points drop
of is fixed. The graph below shows the rate at which the points drop off.

You need to get to goal within 45 minutes of the first person in goal to get
much in the way of usable arrival points. After about an hour the points are
getting close to zero. Technically, the points are zero, one and a half hours
after the first pilot in goal.

We want guys to get out in front to show their skill, and not just follow a
gaggle. However if points are awarded for simply going early, then guys will go
early, and then simply group up into gaggles and fly along. Makes it all a bit
pointless.

We want a system that gets guys out in front at the business end of the task,
towards the end, and not just 10 seconds in front, because that only shows who
was more aggressive on final glide. We need guys to get in well before, like 10
minutes in front (or more), to show who can really fly. So how do you get in
front at the end? Get in front from the beginning and stay there, or break away
and leave the gaggle behind.

Both of these tactics require real skill, and that is what we want to see. This
system is very simple, easy to explain, and effective. When tests were done by
rescoring competition days with OzGap2005 against older systems, pilots that
went out in front and made goal scored better with OzGap2005 than with older
systems. Get to goal early!

Instead of dividing points up between Arrival position points and
Departure or "Leading" points, Arrival time points take them all:

OzGAP grabs a little bit less than the combined Arrival position and Departure
or "Leading" points, giving a bit more to speed points. For example, the
available Arrival position points are equal to (1000-Available Distance
points)/8 (assuming a Day Quality of 1). The available arrival time points
are equal to (1000-Available Distance points)/4.

OzGAP gets rid of the necessity of worrying about your position at goal relative
to other pilots, only your time getting to goal. It doesn't depend on comparing
any areas. The arrival time points are given out as shown in the curve above
relative to how soon you arrive after the first pilot who gets to goal. Get
there first or soon after first and you get more arrival points.

There is no semantic confusion. You get points if you arrive early at goal.

Scorekeepers might be tempted to combine leading and arrival time points instead
of arrival position points. The problem is that the arrival time points have
already been doubled so it is not a straight trade out. Also leading points are
1.4 times arrival points (whether time or position). Speed points would be
greatly reduced:

At this point the score keeping goes around the bend, where previously arbitrary
allocations of points drift toward complete arbitrariness.