Well, I haven't experimented much with using rounded to size blanks, but..... I do not consider anchor seal to be a good protector for blanks cut to size. It doesn't seal 100%, which is what you need. I have kept some rounded madrone and apple blanks by just wrapping the outside, making sure that the film wraps an inch or so over the rim, for 6 or so months at a time. The apple blanks were 6 by 12 inch. The madrone blanks were smaller. I have sealed madrone cylinders, 3 inch diameter, with Titebond glue, again, making sure to seal an inch or so down the side as well as the end grain. Won't know how well it works until I turn them down. I have had pieces of madrone that looked fine on the outside, but were shattered on the inside. Madrone is just like that.... I guess if you want to go overboard for protection, use anchor seal or titebond, then use the stretch film over the outside, and again, make sure the sealer wraps over the edge an inch or so. I generally prefer to keep my logs whole and cut as needed rather than prep it out and let it sit. I get more survivor pieces that way.
Most interesting way of sealing the ends of logs that I have heard of, but haven't tried, was to seal the end with laytex or oil based paint, and who doesn't have several cans of old paint around? BEFORE the paint dries, slap some plastic film on that. The wet paint sticks to the plastic and keeps it in place. The plastic totally seals the end of the log, and again, I would wrap over the ends a bit. Cover with a tarp and keep it off the ground and out of sun light.... I guess the same method would work with anchor seal.
Other than that, rough turn your blanks. The less mass there is, the less stress you will have in your wood as the moisture levels try to equalize with the local environment. Round over all edges and seal past the edges.....
robo hippy