I did it with Raka over McClousky (Home Depot) and it seem to hold with no problem after a year.

: Brett,

: Give Larry at Raka a call, he should be able to tell you for certain. I used
: Raka over System Three without any problems. You might notice a color
: difference if you cannot completely coat the boat with one brand. You
: might want to look at doing the inside with your leftover MAS and using
: the new Raka on the outside, just to keep the color consistant.

: Mike