Use PersistentDataContainer to identify flying bows

src/main/java/net/trueog/flyingbowog/Listeners/OnEntityShootBowEvent.java

@@ -32,9 +32,18 @@ public class OnEntityShootBowEvent implements Listener {
         // Only react to players shooting arrows with our Flying Bow.
         if (!(event.getEntity() instanceof Player player))
             return;
-        if (!(event.getProjectile() instanceof Arrow arrow))
+        FlyingBowOG.getPlugin().getLogger().info("[FB-DEBUG] shoot by player " + player.getName());
+        if (!(event.getProjectile() instanceof Arrow arrow)) {
+
+            FlyingBowOG.getPlugin().getLogger()
+                    .info("[FB-DEBUG] projectile NOT Arrow: " + event.getProjectile().getType());
             return;
+
+        }
+
         ItemStack bow = player.getInventory().getItemInMainHand();
+        FlyingBowOG.getPlugin().getLogger().info("[FB-DEBUG] mainhand=" + bow.getType() + " flags=" + bow.getItemFlags()
+                + " isFlyingBow=" + isFlyingBow(bow));
         if (!isFlyingBow(bow))
             return;
 
@@ -71,10 +80,15 @@ public class OnEntityShootBowEvent implements Listener {
 
             boolean sameWorld = shooter.getWorld().getKey().toString().equals(worldKey);
 
+            FlyingBowOG.getPlugin().getLogger().info("[FB-DEBUG] mount tick: sameWorld=" + sameWorld + " dead="
+                    + rideArrow.isDead() + " valid=" + rideArrow.isValid());
+
             if (!sameWorld || rideArrow.isDead() || !rideArrow.isValid())
                 return;
 
-            rideArrow.addPassenger(shooter);
+            boolean mounted = rideArrow.addPassenger(shooter);
+            FlyingBowOG.getPlugin().getLogger()
+                    .info("[FB-DEBUG] addPassenger returned " + mounted + " passengers=" + rideArrow.getPassengers());
 
         }, 1L);