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You can. They have about a 50% chance of being boosted though. I have a ton of points on my alt account . I can send you some. I find it's more useful to use the points to "promote" (especially giveaway posts) posts rather than "boost", but you can do both, just boost doesn't always go through.

I just tried to boost one of your posts with my alt but someone beat me to it. I'll send you some points after lunch and you can play around. I was gifted a ton of points recently and will gladly pay it forward and give you some.

Pro tip: If you are using points to boost use the minimum amount allowed (150 points I think). This increases your chance of getting the boost approved. Ecency refunds points if they decide not to boost your posts so you don't lose anything.