I've never used a pre-wash foam on a regular basis. I have a Gilmore gun attachement for a regular hose but with Rinseless such a part of my routine now, I'm not sure it's really needed. I've seen the videos comparing a pre-wash foam and Rinseless with near zero difference. Makes me wonder.
As we move into the hot summer temps of 80's + there's likely no way I could do it as even right now at 8am when it's 75 outside, a foam coating will start to dry quickly.