Nicks, did you knock in the edges of the toe (make them curl over)? That would prevent the stiff surface layer from separating from the rest of the wood. Anyway, given that those cracks are tiny, I would recommend putting some superglue in them. PVA might not soak in well. If really prefer using PVA, try diluting it with a *little* water, just enough to make it soak into the crack.
A couple days after glueing, you can put some shoe goo on the toe.
Just my .02
Went for the superglue option, it's survived an outdoor net so fingers crossed should make it for the start of the season.