I've hunted POW a lot for bear in the spring, but never the fall. They don't close the roads, your just not allowed to drive them while hunting. You can still drive the roads. A lot of people will use skiffs to get to the river/creek mouths and then hike in. Or you can use a pedal bike on the roads.
For a first time hunter there, if you gt drawn I would recommend contacting mike of Coffman Cove Aventures. He runs an outfitter and can set you up with a skiff, a vehicle, nice cabins and good food. I have used him a couple of times in the past. Reasonable rates. But, as gasman stated, nonresident will have to draw or hire a guide starting this fall.
I will probably never hunt there again. I love it up there, but the draw thing really turned me off. It was pushed for by the guides who charge about 5k$ for a week. There are a lot of bears on POW, and it is easy hunting from skiff or vehicle. It is(was) the perfect DIY bear hunting locale. Good luck.