IF your laptop has intakes in the bottom, then a stand type cooler will work.
It will force air under the laptop so it can breathe better, and not get stale air.
This.
Having my G7 on an aluminum stand, fans on or off, improves the thermals. It breathes better, and the aluminum has better heat dissipation than the wood, glass, MDF, etc. surfaces a laptop is most often placed on. Combine that with some micro in the advanced power options and you will get your best performance, thanks to minimized throttling.
Always bums me out, when I see a review of a gaming laptop where the i9 is close to the performance of the i7 in bench tests, because it is throttling so much. Many buyers have no idea they are basically wasting their money on the i9, simply because Dell or whomever, cheaped out on the cooling. Or decided they did not want the added size or weight that usually comes along for the ride.