Hatch Rear Seal Helper Kit
 

Has anyone tried this?

Porsche 944 rear hatch helper seal | eBay

Any feedback or opinions?

It looks like a good product.

But do you really need it? If your hatch seals still have some cushion (pocket) left all around, you could probably just adjust the hatch pins.

If your seal is old and flat in spots, yeah, it looks like it would work.

You could probably test first with some brown DIY door weather seal from Home Depot or Lowes. Not the flat sponge type, the molded seal. The door seal may be a little smaller but it has the adhesive seal to bind to the Porsche hatch seal.

GL
John