trying to get 70 prayer...

is chaos altar worth it bc of pkers & the loss of bones or should i just do ecto?

I did like 93 prayer there on my iron and only like 4 times got pked. If you are paying attention, you will always log out before they can hit you. They load in a second before their screen will even be rendered from hopping, so unless you afk, you should be fine.

Really pay attention at wildy alter and be ready on log out and you won't get pk'ed at all. Easier said than done.
But you can also just spam click bones on the alter. Most pk'ers there are super bad and won't get you down before you spent a full inventory lol. This will result in lose of bones but should still be better than ecto.

Just got 40-70 a couple of weeks ago, lost MAYBE 10 bones max from pkers. I was using the spam click use bones on altar though, but i simply just pray mage and was find..only saw a handful of PKers too

Is that confirmed? I did a few thousand bones like 8-9k and avg 2.109 uses per bone over the span with spamming altar and taking breaks

It's not. I manually used all of mine and it still gets the same chance to not use the bone.

Chance is the same.
What i meant is that if you have finger on logout button then you log out before pk'ers attack you and that way you don't lose any bones.

Ahh. Got it.