Cross training with femoral stress fracture

I'm probably jumping the gun, but I've been looking for decent cross training while this pesky stress fracture heals. Right now I'm on rest from any impact exercise, and I won't see my doctor again until later this week, so I can't make any decisions on my own (thanks to my work schedule I can only make one appointment a week, on Wednesdays: healthcare workers always have the worst health care).

But still, I kind of want to know what my options are. There are only so many 30-minute core routines I can tolerate before dying of boredom.

Of course, there is deep water running. I've done it before (once), but my gym pool is crowded. And I would probably need a buoyancy belt, which is added cost and hassle. However, conventional wisdom recommends it as the best replacement for running, and Pete Pfitzinger even has a 9-week pool running program I could follow.

She looks silly.

I considered rollerskating: your legs can stay on the ground if you're careful, right? But when I Googled the idea, this came up:

So I'm going to go with NO on that one.

I could use the elliptical or exercise bike, but not yet. The elliptical hurts: when I bend my knee and apply pressure, like going down stairs, that is when I feel the most pain. I assume the bike would be similar, although I could consider a reclining bike. I'd have to try it to see.

Lastly, I've thought about the rowing machine. Has anyone had experience with this? Is there too much pressure on the legs? The push-off is what I'd be worried about.