I'm curious as to the design. My method works ok for me (loosen - do not remove - castle nut, apply tension with a pickle fork or pitmann arm press, then whang the eye (back up with a sledge) with a BFH, and the tapered pin will almost always drop loose, because the whang "springs" the eye slightly. You do always travel with a pickle fork, don't you??? I've used simple leverage to put tension on the pin, too, but that takes three hands (lever, backup hammer, swinging hammer), unless you have well trained feet and prehensile toes......

Not responsible for advice not taken...