Yes, replying to my own post.
http://www.cruisersforum.com/forums/f48/new-style-harryproa-cruiser-144807-11.html#post1829998
Where Rob says...
"The Cruiser range of boats have air circulating in the cabins and the saloon when the boat is sailing or at rest. This is achieved with large dorade type vents mounted above the waterline on the lee side of the ww hull, under the bridgedeck where wave impact is minimal and the air much cooler. These don't work on a cat as one one tack, they are swamped."

So, perhaps, little reason to sail a HP wrong way around.

On March 2, 2019 1:37:10 PM UTC, "'.' eruttan@yahoo.com [harryproa]" <harryproa@yahoogroups.com.au> wrote:
|
|
|
| | One of Robs many innovations is the leeward facing bridge deck
| cabin
| | that nearly always provides shelter from the wind.
| |
| |     I'm not sure that the sail on an HP or HP style boat need
| always be to leeward.
|
| | On a long passage in the tropics, one might choose to have the sail
| to windward to direct the breeze into the cabin instead of sheltering
| the cabin,
|
| I do not understand this. Air will have much difficulty entering the
| cabin if it cannot get out, and if it can get out some orifice, then
| it can get in said orifice and come out the cabin door. So given air
| flow is possible, cause you open a port, the typical orientation for
| sailing a HP is perfect for a breeze through the cabin, as you have a
| large low pressure (lee) door sucking the air out.
|
| | one might choose weather to have the wind to port or starboard
| based on sun angle for shade or warmth. 
|
| I think a sun shade, perhaps removable if you sail where Steinar is,
| maybe, is a simpler solution. Or a hat.
|
| |  In mild conditions, the choice of port or
| | starboard tack might be based on comfort criteria rather than
| rigid
| | sailing criteria of always having the sail to leeward.   I'm the
| kind
| | of
| | guy who might change course for a few hours on a long passage 
| just
| | to
| | get the sun out of my eyes, or tack downwind to eliminate the
| | constant
| | rolling on a monohull.  
|
| | Being comfortable is more important to me than making the fastest
| time possible to the next tiki bar with scantily clad barmaids and
| umbrella drinks.. 
|
| Actually, the most important thing to YOU, from your prior
| assertions, is the boat be no longer than ~30', right? Has this
| changed?
|
| Because a longer lighter boat, with a center of rotation mounted
| cabin and helm is more comfortable to the first order.
|
| | If we are always in a hurry to get
| | from
| | port A to port B, that suggests that most sailors don't really
| like
| | sailing..... they'd rather anchor in a crowded anchorage or park
| in a
| |
| | slip in a floating trailer park. To me, sailing is about being at
| | sea...
| | If I'm in a hurry to get someplace, I'll fly!
|
| We know. You love slow boats. But I don't think you will convince
| many of their secret joy.