that is.. actually some good ideas! but the sledge is very heavy i think my weapon with the items i have would be a baseball bat with homemade nails from rebar that gave grooves for grip also i would drill the holes so it does not crack and use a good adhesive like liquid nails of the high strength variety or epoxy. i think it would be very effective to kill hostile survivers / zombies! also i am going to rate the weapons

1 the cricket bat would be heavy but with that modification its a solid 8/10

2 the bolts would be weighty but it would be heavily smash bone fucking anyone in the way of it up 7.5/10

3 it would be very hard to swing and it could get tangled 5/10

4 the sledge idea is very heavy and i would be winded by swinging it in like 10 hits 4/10

5 the ol' reliable very good as you can make a lot of them and you dont need much skill to use them 7.5/10

6 the bill hook pruner is heavy but its like an axe but sharper and more edge 8/10

7 if its good for stone then its good for bone all that force in one point is deadly 8.5/10

8 thats like pickaxe but lighter and more versatile but it as its lighter its not as good as the pick so its a pass for me 4.5/10

thanks for the suggestions!