I plan building something like this,
the idea is to use those wooden beech balls with a hole in them as fork heads. Since round fork heads would have more than 50% extra of circumference as a standard one. So you can fit extra wide bands (tapers) onto
easily. only aiming with those round fork tips would be less advanced, but I could spend it a pistol front sight / grain.
also the rubber should last a bit longer than on normal fork tips, because the rubber gets less stretched on the outsides, so the spots where it tears first will be less tense.