if your boot has a small hole you can fix it with superglue and liquid tape

or just liquid tape
clean the rubber boot with a rag and carb cleaner and inside the opening too just don't spray carb cleaner inside the hole or it will dissolve the grease
if you only use liquid tape it will last about 2-3 days with freeway driving

if you use superglue and liquid tape I don't know but mine is still on and not leaking a week later.
again this is temporary so it doesn't sht grease allover your engine bay or wheel

 

update:
held up for about 2-3 months and started leaking very little grease.
so its a pretty good temporary solution