So, I want to increase the mast rake, but in order to avoid improvising, I bought a set of “rake shims”. A rake shim is a piece of plastic fitting in a foil box between the top of the mast and the board. Since that piece of plastic is cut to a specific degree, it will slightly tilt the mast and increase the rake.
You can find a few sets of mast rake shims around, but I bought my HERE.
Placing the shim in the foil box is easy. You drop it inside and don’t have to adjust anything because the dimensions fit, and the holes are in the right place.
In this particular set, shims are from 0,5 to 3,5 degrees. But you can combine them if you so wish. For example, if you have rake zero and want to increase it to 4,0, you can combine 2,5 and 1,5 to get 4,0. If, for any reason, you want the rake in minus, you can turn the shims on the other side to tilt the back side of the mast. (Well, like I said, I don’t know why you would want something like this, but the possibility is here.)
One warning, though. If you use a bigger shim, you might need longer screws! That little “catch” is why I have to stick with just a smaller adjustment of 1 degree because, for a larger adjustment, I need longer screws which I don’t have at the moment.