For those with racing experience on the E35-3, I was curious if this boat generally requires the pole to be gybed end-over-end, or via the dip-pole technique?
A couple of thoughts, NONE of which are specific to the 35-3....
1) some of it depends on how your pole is set up. If your pole has identical "jaws" at both ends, you may be able to do end-for-end gibes. It will require that the foreguy (the line down from the pole) and the topping lift (the line that raises the pole) have "bridles" that control the pole from the middle rather than at one end. If your foreguy and topping lift connect at the very end of the pole, it's set up for dip-pole and you'd need to add "bridles" in order to make it work end-for-end.
2) some of it depends on your priorities and skills. For racing, a good dip-pole gibe can be done very quickly... but requires more rigging (a sheet and a guy on each side of the sail). It also, as you note, requires more people, and more coordination. An end-for-end gibe can be simpler, does not require an extra line on each side, but can be a lot for one person to handle. My opinion (for whatever that's worth) is that 35-feet is about the biggest boat where an end-for-end gibe makes sense in racing mode - bigger than that, a person may not be able to muscle the pole out on the new side, especially if there is any sort of wind.
3) there's no hard-and fast rule that says a boat "requires" one style or the other. It boils down to the people skills and the gear. And, if the people skills steer you toward the end-for-end approach, it's (usually) fairly simple to convert the pole to work that way, if it isn't already.
$.02
Bruce