Please Help save my knees folks! Floor grouting systems?

[charlie1]

I like the look of this however, when grouting I like to get down close to the joint when creating the profile so I'd still be on my knees at some point. Secondly, would it completely replace the wash boy or would it be an additional tool that's going to take up space in the van?

 

[bugs183]

At the very least you could use it just to wash over the drying grout, just to get the washing process started, then if you wanted finish with a washboy. But with a bit of practice you'll notice any joints that need adjusting.
It won't completely replace a washboy as they are handy on smaller jobs, and easier to move around, my Kahl Dham is always in the van and i only bring out the pedalo on the jobs over 20 meters plus, but believe me you'll be smiling when you do!