Are these types of bedding areas huntable?
Yes they are, and you are right it can be tough.
When deer enter their " safe zones" , they become much less predictable. They will meander around depending on the wind and often move around from here to there during the day.
Your best bet IMO is to get into those areas that seem to thick to hunt, during the winter and clear out some lanes and routes in. I do alot of hunting in young pines - though I am fortunate enough to also have some mature pines to put a stand in. Search out trees for stands and set them up on the off season. Or hunt along the edges of the cuts where you can get into a tree.
If there are no trees to place stands in then it can get real tough
. Ground blinds are in order - but again need to be set up long before the season.
It does take a bit more planing than other setups but if you can find the time to get the grunt work done it can lead into some great hunting.