With regards to Inwood, it's a course in my opinion similar to Engineers on the North Shore that time has passed by and although the character of the layout remains intact, between the planes flying overhead, the green flies that will eat you alive and it's location bordering Inwood, an area that is simply dangerous to make a wrong turn in, it's just not that fun to play.
Engineers and Inwood hold on too tightly to the memories of national championships played in the past, and I think that if the courses had stood the test of time the MGA/PGA would continue to use the layouts today for the sections championships and they don't.
Sewane is another story and honestly, I think it's even a step behind the Woodmere Club close by, which consists of two nines that couldn't be more different, a renovation plan that only concentrated on rebuilding holes falling into the water disregarding the style/character of the inland nine.
Seawane, although located in an exclusive neighborhood fell on hard times in recent years and the renovation plan was a last ditch effort to save the club. The club house has areas of marble extravagance, combined with locker rooms and a pro shop out of the Catskills in the 1950's.
The course, especially the holes on the water seem to have been squeezed in and have no character other than the fact that they are on the water. The small channels that run through this area allow homeowners access to Reynolds Channel, but between low tides and the stagnate water, this is really not water you want to be on. Maybe back when it was first built, when the area was a summer haven for NYC residents there may have been some isolation to this area, but with the charictature housing in this area, it's pretty scary.
There are some interesting green complexes, but the 150 to 500 yards that precede them are pretty non descript. There are a couple of long par 4's, the hole numbers escape me that run parallel to the road that disects the course that is a tough test, but all in all, I don't enjoy the course or the club experience.
Note should also be given to the Lawrence Club which is a public course for the residents of the town of Lawrence, which also has a few holes on the water and views of homes in what is referred to "the back of Lawrence" similar to RHC.
Between RHC, Lawrence, Inwood, Seawane and the Woodmere Club you might be able to come up with a decent 18, but on their own, they simply don't stand up to the North Shore and Piping, the Creek, Fresh Meadows, Deepdale, Old Westbury, Pine Hollow and Glen Oaks. The beach clubs however are another story, and having spent many a summer between Lido, Long Beach and Atlantic Beach, it's a great place to be, just not to play golf.