Martin, when making pockets with a drag bit I chose engrave tool. Usually defaults are fine, though lately I have been using a 45 angle for lettering, seems to fill better. Best thing to do is chose a simple subject, like a large letter B. On some scrap try etching using the drag bit at as an engrave tool then vbit
Try raster/offset, 0 angle and 45 ,,, Then a quick engrave. Making sure to keep track which is which, you'll have 7 or so samples to pick which is best.
I use a router, so no input on start commands.
Glen, I have had poor results from the few times I have used quick engrave, so stopped experimenting as my results with pockets are fine.
A case of "if it ain't broke, then don't fix it" I guess. I tried it just to see if being able to use the drag bit in tool selection would yield superior results, it didn't.
I found that quick engrave left unfilled areas and lines ,,, Not much visually, but when light is applied they really stand out. Perhaps settings can be tinkered with to reduce or eliminate these, but since I am getting perfect results with the pockets I don't see the need. But if your results are satisfactory that speaks for itself, and likewise maybe you don't have the need to experiment either.
When I have open vectors or duplicates, I close them and get rid of duplicates. When I want outline letters instead of fill I simply use profile. So I guess a large part of it is what one gets used to within the software ,,, And there really isn't a need to experiment with other methods so long as you are getting good results, and so long as you are convinced that is the best that can be done.