I usually don't use a patch. When I do both my smoothbores like patch/ball combos a lot looser than one would use with a rifle.
Normally I use a wad and ball sandwich of some type.
Powder, thin "overshot" card, lubed soft wad (felt or tow), .610 ball, thin overshot card. One gun doesn't like the thin cardboard under the ball, or any other stiff wad or card between ball and powder. Generally I load that one with a dry felt wad or 1"×2" strip of grocery bag paper folded to 1"×1", then a lubed tow wad, .610 ball, then overshot card to hold it in.
I've found accurate powder charges with these combos at or around, 65 grains 3f, 75 grains 2f, and 80/85 grains 3f, depending on which gun and which wad combo.
I am not willing to burn 100 to 150 grains of powder per shot just to not use a wad of some sort, and satisfy someone else's idea of what should be.
Oh, I generally get about 3 to 4 inch groups at 50 yards with these loads,,, anything larger than that gets rejected,,, and I don't have use for developing a load for further than that.... Funny how certain schools of thought tell us what they load and that we should too,,,, but don't tell us what their standard is for what makes that load good enough.