All right - He actually has a PH, if you saw Quu Domi and the PH that means you had the wrong PH.
The Placeholder can be anything and he is roaming around...you can easily say which one it is because he is the only one running around, through the water, up on the middle, walking down to the water again ...and so on.
Well this Yagudo will respawn every 12 min. BUT, if Quu Domi spawns it will only take 5 mins. after this Yagudo died. So watch out 5 mins. after you killed this Yagudo, Quu Domi might pop - unfortunatly in the whole area...so if you are not alone its still more luck then knowing when to be alerted.
I camped this NM years ago for one month between Mee Deggi spawns and got like 5 pairs of Fuma Kyahan and a lot of O.Kote (12 Kote in 1 Month). Back in the days he spawned in the middle and i just had to be faster than any other...i wished they would change that back ; ;
w/e
since im back on ffxi, i camped him twice, got him twice, got no drop so far - just Strider Swords.