We "can" do that out of Middletown, NY or Wurtsboro, NY.
For me (looking for last Diamond from Middletown, NY.......K06N), we can tow to Wurtsboro ridge, if ridge is working, yes....... high speed pass low (did it for my go.d climb on a crappy day in October....several tries beforehand....).
Then ridge fly up, big air intake, dive around the knob before Ellenville, find a thermal, get into the wave.

I have been in the wave in a C-150 on glider freq. told gliders I knew they were there, I would stay out of the way.
When I did my gold climb, it was a fluke, Chip Beardon (JB) was up as well. It looked doable, Hank (the real UH now) said, load a barograph, go for it.
I got my climb.
I still want a diamond climb from Middletown, NY. Then I can have all SSA badges from one site ("A" through 3 diamonds).
Hank (UH) did the same but diamond climb, then again, he was part of the "mass 1000K" at Newcastle a few decades ago.

So yes, it can be done, it just adds to the level.
Frankly, doing a diamond climb in the NE US is tough. Some tougher than others.

BTW, my badges were done by the log, photo proof (killed my 1st diamond distance) or Replogle barograph.