KISS vs. KK Gauge
This swatch shows that the KISS looms can handle bulky yarns. The yarn I used was from my stash with no label, but I believe it's Lion Brand Wool-Ease Thick and Quick. I modified the wrap method to use every other peg, and two pins per peg. The top section is done with the KISS loom on Setting 2, the middle section is done on the round yellow KK loom, and the bottom section is done with the KISS loom on Setting 3.
On Setting 2, the gauge is 3"= 6-3/4 stitches and 11 rows.
On the yellow loom, the gauge is 3" = 7 stitches and 11 rows.
On Setting 3, the gauge is 3" = 5-1/2 stitches and 8 rows. (Setting 3 is only possible when knitting flat pieces, not in the round, because of the placement of the bolt holes on the boards.)
Your results may be slightly different, but a close approximation to the yellow KK loom is to use Setting 2, maybe with a spacer or two, and the modified wrap method.