I use ONRWW, it just looks great on my metal flake! I'm going to try Ech20 this weekend, hopefully it has the cleaning power. I always hit the boat asap when I pull it out as I fish a lot of rivers and don't allow the brackish water to bake in the sun. My hull,trailer and motor are coated with CQ Uk so that's why I'm going to try the Ech2o.
The boat specific stuff like Bass Boat Saver were good but the rinsless solution is a far better bargain