When I cut down a tree, I remove the bark, split the log into staves and trim each stave down to a blank immediately (or as fast as I can). A blank is the length of a bow (50-75 inches, for me), 2-3 inches wide across the back of the bow, an inch deep at the handle area and thin enough (in depth) along the limbs that I can barely bend the bow-to-be to brace height. I then sit the blank aside for a 3-6 weeks, and its dry and ready to work without any checking, despite the fact that I didn't use a drop of sealant. I've also quick-dried these blanks in my car during the summer, and had them seasoned enough to work in 5-10 days, depending on how hot and sunny it's been.
This is the fast dry method mentioned in the Traditional Bowyer's Bibles. I've found it works great, without fail, and it doesn't require me to buy sealant. You just have to work real hard the day you cut the tree, and much less hard when it's time to turn the blanks into a bow later on. It makes sense to me to do it this way, because green wood is easy to work, and seasoned wood is much harder. It also makes it easier to sell the blanks, as shipping doesn't cost as much.
-Eric