This is the best cushion available, they are developed by the roho company which specializes in pressure reducing cushions. The roho cushion for wheelchairs is the most advanced cushion available to prevent pressure sores, and it is extremely expensive compared to the motorcycle seat version. It is an upgrade from a gel cushion and more expensive. These hawk cushions are actually very well priced for the benefit that they offer.
You only need 1hr of sitting time in the same position to develop a pressure sore, It all has to do with the pelvic bones and gravity (our own weight) blocking circulation to the skin in direct contact with the ischium (which is the lower portion of the pelvic bone) and the skin in direct contact is the crease where the buttock ends and the thigh begins. However a normal person whom is healthy have a defense mechanism that tells us that this hurts and feel numb and we change position allowing blood to circulate to the area that was deprived of blood due to pressure. Paraplegics do not feel in that area and that's why they develop sores. These hawk cushion redistributes the pressure points and allows for free air to flow minimizing moisture which is a component that also plays a role in the development of sores.
Now you still have to alternate positions with this cushion but it will take you longer to feel the need to do it, allowing you to have a more comfortable ride.
I do not work for roho, nor for hawk, I take care of wounds and these are my two cents on this topic.