This is the summertime favorite. Warm water, semi-predictable dam releases, big eddy, decent ease of access. Heck you can even get away with a fiberglass board here and not necessarily destroy it (if you're careful). Higher levels that will still work for kayaks are not going to be so fun for catching the wave on a board, but the lower range (2500-5000 cfs) is a go.
Is this wave always going to work for you? No. The river right (surfer's left) side is not going to be much fun. But when the water is high and river left comes in (5k-10k+ cfs) you are looking at some fun. Access is actually quite easy here... in some ways, easier for a board than a boat, but don't bring your favorite, (delicate) board. You want a beater, if for no other reason than that it is a broken dam and the wave flushes directly into another hole; but you still have a lot of room to pick up the pieces (a big eddy). Other downside, this spot mostly runs when it's cold.
Is this spot going to be great to board surf? No. Is it acceptable? Maybe. It's a harder swim onto the wave than at hartlands or sharon dam, and the eddy behind it is a bit boily, plus the wave itself is a bit lower quality, but hey, beggers can't be choosers! A nice board should be fine here, but you're going to be doing a good bit of swimming. Also you will almost assuredly be swimming in White Mtn. snowmelt.
Why are we even mentioning this spot when it is not even that great in a kayak? Warm water and ease of access. This spot normally runs late spring / early summer and when it rains in the summer. Are you going to shred? No. Might you have some fun messing around in between bridge jumps even on a boogie board? Yes. (Maybe).
Wear a helmet, probably a lifejacket too, be careful standing up in the water, and be sure to brush your teeth (love Dad).