Mud... Do yourself a favor and invest in copper wire.
Pine trees will pretty much always have wire on them.
It's a fallacy to try to wire out the big branches until they "take", then start on the smaller ones. The big branches will need to have wire on them for several years until they have enough new layers of wood to hold their desired positions.
Wiring it all out will expose all the branches close to the trunk to the sun, enhancing the opportunity for backbudding.
Wire it out, to the tips.