lol I know what I say as I used to play fr on 1 space for 9 MONTHS... Maybe it's possible, but after first press your space's jumping, so it is more comfortable to use 2. If u use twiching your finger is still on the space, and feeling space helps a lot imo. I would put some thing under space ofc to make shorter jump but since I have got G15 I prefer do nothing with it, as it was expensive. + I like feeling the jump.
lol at u Duluś as I say only smart things.