I know a better way, it my become a lil heavier and may be a lil more time consuming but it should be better in the long run ...
Go to your local metal works/ engineering shop (any where you can get steel from) and buy some proper fitting pipe (harden steal is great), it shouldn't cost more than $3-4 at max.
Find some one with a welder.
Get the fork and drill a small hole (maybe 5mm depends on the type of welder is used).
Get the pipe and slide it into the fork and tack weld the pipe to the reinforcement through the hole.
And there we go a reinforced fork ...