Earn gold by moving around. The amount of gold you get, is pretty low. With 1 pair of golden sneakers you get 1 gold per 10 meters. This is a lot of distance to travel for not a lot of gold.
For $n$ copies, the gold you earn per meter is:
$$
\text{GoldPerMeter}(n)
=
(\,n - 1\,)\cdot 0.1 \cdot 0.5 + 0.1
=
0.05\,(n+1)
$$