It's good that you found a solution but I'll try to give you some more choices.
First possibility is to bind it to caps lock - this is what I do and it is really good becouse it is one of the most accessible keys. (anybody knows the history behind vim's escape key? )
Alternatively, you can rebind some other key to space, or if all you write in chat is "gl hf", just bind yourself some key to enter-g-l-space-h-f-enter and forget about it
I hear what you are saying, but on my keyboard the ½-key is just to the left og my 1-key so it is litteraly right at my fingertips when I use the grid-bindings.
Also if I put it on capslock then I would be at risk og writing ggwp with capital letters without noticing it. This might give my opponent the impression that he played exceptionally well, which might not have been the case
But actually you have a point that the caps lovk would make it even more accessable. I'll consider it.