Beagle
I do wonder why so much importance is seemingly attached to this procedure from the stone age of aviation! And I say that as an IRE with 15 years of IRE'ing!
Isn't it that in the IMC Rating the holds are supposed to be pre-planned on the ground, using the Met form 214, while in the IR you are supposed to work out the correction on the spot?
Precision surely does not need to be that accurate, because a faster plane will be tracking a larger pattern, so the airspace will be reserved laterally anyway.