HCH, I have done it. I have a nephew who is in a wheelchair and he shota 300# boarat 10yrds with a crossbow. We put it out the same day and brushed it with fresh pine. I would be very hesitant to leave one out over night. As curious as bears are, they will definately smell or sense something and will probably investigate it. Possibly ripping it up. Also, be prepared for some very close encounters while sitting in the blind. Its a rush!
Edited to add: He shot it the first night and it was the 3rd bear at the bait.