I have 4 of the Sails mats and an 8' x 6' piece of blue fabric that has to be about 20 years old now! For a small game one or two of the Sails mats works. I can attest to the benefit of the larger surface that Dobbs used and I think there are photos in the AAR forum of it.

Now I am being seduced by the fancy commercial mats again because I got a 20% off coupon with my Oak & Iron KS for a Tablewar mat. 6x4 Caribbean sea version:

https://tablewar.com/collections/fat...x4caribbeansea