I have a little additional piece of the puzzle to contribute. We have never really had "enough" room under our boom to format a dodger at a "cruising" height. So the one we installed back in '95, required some ducking of the head when going into the cabin. (Most boats with an aft cabin interior have a sort of raised 'hall way' to transit to get to the companionway opening. We rest an elbow on each side of the hatch opening for support when going in and out. Always reminds of the line from the Indiana Jones film about how a "penitent man may pass"...)
The problem was -past tense- that the fabric of the mainsail cover would rub on the dodger top and both would potentially wear thru. 'Past tense' because in 2014 we had a new UKSails Lazy Cradle installed.
Trivia: Most sailmakers and canvas vendors nowadays sell a version of this, and UK did not invent it either.
This keeps the furled sail completely on top of the boom. It's like having another full foot of room for a dodger top.
Since the fabric is wearing thin on our present dodger, the plan is to have a new and larger one fabricated in the next year. The old windows are getting rather cloudy, too.
A lot more shelter from sun and rain would be welcome.
BTW, we happened to go aboard a PSC-Ericson 34 last winter for sale up in Everett, and the dodger seemed to be normal height for that model of boat.