I tried a squeegee once with a couple test rolls, and had fine scratches. Good thing I tried on test film.
Mixing surfactant according to directions left a residue on my film.

For 120, I found I can take it off the reel and run it under the faucet (blasting water) and then hang it and it seems to keep spots from forming. I can't do this with 35mm because it is too long to handle in this manner.

Recently, I rather unscientifically used far less surfactant than the instructions say, and had decent results. I may try with distilled water also.
I am reluctant to try the squeegee again.