An OHJ is certainly the default, but I don't know why more people don't get taught about IP joins.
Just out of interest, I was originally trained at a well-known regional intergalactic spaceport. I was never shown a OHJ at all during my entire training ... and I wonder how many others that applies to ?
As to IP joins - works for me (but then like most people, I'm quite happy to join in whichever way works best for all concerned), but wouldn't this simply complicate the issue even more, particularly for the more inexperienced amongst us ? Do you not have to have established (and therefore presumably published?) IP's ?
I'm no expert on these approaches, so feel free to educate me !
FF
