Kyle, and others;
To add to the conversation about green sizes, irrigation spacing, and mowing requirements, the following:
The 11th green at Bandon Trails is approximately 14,000 sq. ft. in size, with all heads located outside of the putting surface. I believe those heads are the standard spacing at Bandon Dunes, approximately 65' or so apart, on a triangular pattern. It seems reasonable that Ken Nice and Colin Jenkins, the irrigation installer, will adequately irrigate the Old Mac 5th green while keeping the heads outside the perimeter of the green.
The large practice green at the practice center is approximately one acre in size, and does have irrigation heads within it's perimeter. When we walk mow that green (on occasion) it takes two staffers 50 minutes to complete it. Referencing Tom Doak's conversation with Ken Nice about triplex mowers and hydrolic spills, there is a streak of sod on that practice green that has been in place for 5 years now, still looking different from the surrounding turf. It was put in place after a hydrolic leak from a conventional triplex unit left a streak 150 ft. long, across that green, and is one more shining example of why we walk mow all the greens at the resort. (The exception is that same practice green, which we mow with a electric triplex....having learned our lesson about hydrolic spills!).
Lastly, one more terrific quality of fine fescues is their slow growth habit, and thus our regimen at the resort of, throughout the growing season (mar-nov), mowing only every other day (and rolling on the alternating days). This quality is a labor saving benefit of fescues and allows us the freedom to commit to walk mowing greens, regardless of their size and time requirements.
Hope this helps.
Tom