Saw this on someone's back yard in Great Neck NY.
It's on a rail system to lower it in.

I thought it looks like a Powerplay 28? But seems older.
Sorry for the crappy pics, only had the phone w/ me.

And no, the answer is not 'a 17ft Boston Whaler'

Your right, the distance is screwing up your perception. It's a 19ft Boston Whaler!

Older 31 Sonic maybe?

Almost looks like a 33pp, however it looks a bit high sided for that.. With the photo looking like a sasquatch sighting it's kinda tough to tell.. haha !!

Maybe it's a 30 velocity race deck??

Looks just like my 33 Pp.

which side of great neck?

"I thought it looks like a Powerplay 28? But seems older."

Funny, I didn't even read that far down into the post,
However I'm still sticking with a 33pp.. haha..

I would agree with PP. the sundeck gives it away.

Looks like a Blue one to me.