There’s nothing wrong with pressing your trimmed sugar leaves. You can dry and jar that stuff and let it gas off for a bit of a cure same as bud if you want to.
If your trim is fluffy enough to be worth saving it’s worth doing. I was using 2”x3” 90 or120 micron bags. 15 grams should give you back a couple of grams of rosin.
It’s wizardry when you can pull rosin out of thin air with out affecting the size of your stash
I haven’t made pucks for bagless squishes with trim. Further research required.