Depends on alot of factors. But alot of spring bears still carry most of their winter fat for the lean spring and breeding season. I shot a spring bear this year with 3.5 inches of fat from rump to neck, nearly 100 lbs of fat. Field dressed he weighed 380 lbs. By mid summer he would have surely weighed almost 100 lbs less. He was almost 6' 6" nose to tale and a couple 16ths shy of 20 inches.
every spring bear i have seen killed early in the season is skin and bones maybe they hiberanate longer in some places due to the weather.
Very possible. In Washington we have fairly mild winters and our bears may get up two or three times to move or eat if the weather warms a bit.
From the studies that I have read, they should come out of the den with at least a little fat reserved to compensate for the lack of food in the spring as well as carry a boar through his travels during the upcoming breeding season.
My skinniest bears have always been in August. They start to gain fat in Sept and by Oct they have had inches of fat..
Try to put your tree stand in a tree with plenty of background cover, keep the prevailing winds for that time of the year to your face, and take care of those pesky squeaks and creaks your stand may have developed while sitting in the shed. A good treestand lube can be made by heating petroleum jelly until it reaches a liquid form. Some hunters have reported success by including a cover scent in this mixture before applying it to their stands.