Totally agree Mark
I flow melamine on from a fine soft brush on pens and a larger soft brush on small bowls.
I apply danish oil or tung oil using a soft cloth ( or white tissue ) but have started using a brush for that too ( with danish oil) the. immediately cleaning the brush in hot water with detergent. I tend to apply the initial coat with lathe off then subsequent coats with slow speed lathe. Speed n ease , the original easy to apply polish , I was taught to apply at slow speed from a cloth then speed up to polish with a different cloth. This avoided “lines” of polish on the work which then had to be “rubbed off”.
As for CA I apply using polythene ( of the end of my nitrile glove ) and wipe along then get my finger off before it sticks but that’s only on pens and to be honest I’m not that impressed by it compared to melamine.