The Loop Antenna has the advantage of being less affected by reflection signals due to its Faraday shield. By itself, the loop can provide the entire antenna requirement provided the signal is strong enough to be received by the untuned loop. If the signal is too weak, a Yagi is recommended for its directional gain. If the signal is too strong, the use of an attenuator may be required. (Fox Hunt Attenuator).
ARDF is an art, not a science. It requires skill. You need the practice to acquire that skill.