So, other than hike, what does the third person do on the VX, or the Viper for that matter?
The roles on the VX are similar to those on the Viper, but with less strings to pull.
Almost all owners are getting to the consensus that the boat is faster sailing with 2 instead of three unless there is a windy event.
The ergonomics, loads and size of rigging and sail, allow for a two up operation without any problems, therefore in the event of a third crew member, he/she may help with mainsail trimming (not too much strength required) and may be helpful during the douses in a hurry rounding the weather mark. besides that keeping the head out of the boat and calling tactics will be the major functions as well as constantly trimming the jib on the runs as the apparent wind can be a pain to keep the jib constantly full without over trimming it.