Just picked one up. Does anyone know how to use it? Basically the same as walking one on top?

It is the same except it moves a little slower. Best when used with a moderate retrieve so it can glide correctly.Doesn't seem to react well if twtiched too hard or fast. I like to tie it with flouro or mono line using a loop knot to get the best results.Throw in a pause and get a rhythm going it darnnear suspends as it sinks very slowly. The thing I don't like about it is it doesn't really run subsurface. It seems the more you twitch it the deeper it goes even if you pull upwards it tends to dive. Just not my cup of tea I'd rather have something that runs just under the surface which is how this lure was actually advertised. I have had zero succes in fresh water with this bait but been tearing the heck out of them in saltwater with it when I can keep it out of the grass. Mostly due to the fact that I don't fish very clear water in fresh. It is more of a sight bait. I could see it working pretty well in clear water over submerged weedbeds and over vast flats.

Love the sub walk.  You can make it work really fast, you can work it slow, you can work it very erratic.  It's a great bait with a tremendous variety.

Love the sub walk. You can make it work really fast, you can work it slow, you can work it very erratic. It's a great bait with a tremendous variety.

Personally I didn't think it acted very well when worked too fast but my rod and reel and how I am snapping it could make a whole lot of difference.

When they first came out, a couple of years ago I bought four of them (2 each in 2 colors)  They've seen limited use - maybe 50 or 60 minutes total.  I haven't gotten bit on them yet.  They look ok in the water, so I think I just haven't found the right situation for them to be effective.

Save your $ for something else.

Yeah what I kinda meant was it seems to be more of a niche bait. Nothing magic or spectacular but in the right situation it can be deadly. Saltwater fish love it. Far as bass fishing goes I'm sure I could achieve much better results with a jerkbait.