Robert Galloway wrote:

I waste a little wood but when dealing with 4 x 8 panels, I lay them on
some junk 2 x 4s on the floor, cut a little proud of the mark with the
circular saw and then cut to finished size on the table saw. I, too,
would like to have a panel saw some day but the aforementioned has
gotten the job done so far.

bob g.
And if you clamp a straight board for a saw guide, you can get a fairly
straight cut. You still want to tidy it up on the TS but with little waste.
jo4hn