Ricebergs will use this defensive scheme to defend the handlers. Assume the force is flick. The point of this defensive scheme is to force the disc to H3 and get them stuck on the sideline .
Assume 6 is forcing flick. When set up, 5 should be VERY TIGHT on their man while 7 should be poaching (about 5 or 6 feet away) from H3 into the cutting lane. 7 is kind of in the middle between H2 and H3 forming a triangle.
The reason 7 is poaching the lane is to prevent H2 from being able to easily throw the disc to a cutter making an in cut in to the lane.
So for example, during the stall count, cutter 3 (blue) makes an in cut towards H2. H2 won't be able to successfully throw the disc because 7 is in the way and can block that throw.
cutter 3 runs out and let's say for example, cutter 1 tries to make an in cut towards H2. H2 can not throw the disc again because 7 is in the way.
Good offense requires the handlers to be able to break the mark (throwing against the force. In this case H2 throwing the H5). This is why 5 should be very tight on their man, to prevent H1 from getting the disc.
The only best option for H2 is to throw it to H3 which 7 is poaching off from. This is what you want H2 to do.
Once H2 throws it to H3, H3 is trapped and the defense can pressure H3 to make a bad throw or turn it over. If H3 gets the disc on the side line, 5 should be tight on h1 and 6 should be tight on H2 as well.