I have a Bosch 10 inch sliding compound miter. My DC is mainly a shower curtain that fits most of the way around the saw, then gathers into a connector at the bottom. It works fairly well. I at some point will use some sheet aluminum attached to the blade 2.5 inch dust collection duct built into the saw. This will be formed into a "scoop" follows behind the blade. Hopefully, this will catch a lot of the dust before it hits the shower curtain. I'll use a hose clamp to hold it in place. Can't recall what saw had something like this "scoop", but some brand has this built in and inspired my shop-made solution. Always a good topic, given this is the worst sawdust producer in many of our shops.
The more I do, the less I accomplish.