Maybe do as Bruce suggests, plus set-up a dial-type run-out gauge. Could anchor it to the strut.

Just to reemphasize, it doesn't take much prop damage to cause vibration.

About the extent of repair possible without proper tools would be dressing the edges slightly with a file to smooth a nick.

I bought a spare and carry it on-board in a foam-lined case, along with a 1 1/16 wrench, puller and spare nyloc nuts and keys. You can by such kits or make em up.