Lets make a list of situations where HOing is and isn't ok.
OK to do it when:
It's 3 v 1 or moreYes
It's against a hordeYes
It's against bombersYes but not recomended on heavies
At extreme altitudes where you may only get one pass (unless you both bring it down to the deck)no
During base defenseYes
When you are badly damagedKinda,If i have a pilot wound/fuel leak/engine leak
When you are out of fuelNo
When you are saving a friendly from 3 or more consYes
Against 262sSure but not recommended
The other guy fires on you first (most important)Depends, if the pilot is someone i know will whine about me HO'ing them, I'll HO just to have the chance to call him a hypocrite.
Also, If i encounter a plane i KNOW can outperform mine to a great extend, I'll take whatever shot i got on him, That includes the HO shot.(Like, Say im in a P40E, and i come across a spit9, If i get the chance, i'll HO)
If im heavy on an important task, And i encounter a fighter, I'll HO in an attempt to advoid having to jettison my ord.
If im helping to take a Base, and they ask for The skies to be Clear, I'll Ho. Great example of this was a fight i had with Reiner. I was providing fighter escort for a squadie, I went to the town to deack in a pony, Encountered Reiner in his Hurr, I had a more important assignment to do and He was proventing me from achieving it. So When i Had the Ho shot i took it. I wasent concerned with the 1v1. I was concerned with clearing the airspace So my squadie's buffs could bomb the town unharmed. I ended up hitting his engine and he ran to his ack to land. He then went on 200 and whined about being a HOtard. The way some people react to Ho's just make me want to Ho them to hear their whines. Like Reiners, I told him it was nothing personal, and i was just trying to clear the airspace as quickly as possable to protect friendly bombers. But he whined for 5 mins on 200 about how im a dweeb/hotard/noob/noskills/noaim/[B cuss word]
And challenged me to the DA for a 1v1 to prove his apparent dominance lol. It was all just so funny to read that i was kinda glad i Ho'ed him, and the funnier thing about it is, If he would of reup'ed right away, Instead of whining on 200, he may of had time to shoot me down and go after the buffs i was trying to protect.
If you go into the MA living by the 1v1 rules, then Your already doomed from the start.