I wouldn't grow under pine trees, for stealth purposes you can plant amongst them that way come fall when all the other vegetation has died (except your babe and the pine trees) your girls won't be as noticeable. Another use for pine trees is to alter the light cycle of the plant a bit. Under a pine tree it will obviously get less light so that could mean an earlier flowering plant. So you might want to keep it in a bucket for easy transportation. Also if you do decide to plant under or amongst pine trees make sure you lime the shit out of the soil to counter some of the acidic properties.