> Have you ever done a white boarding session where more than one person was writing on the board at a time?

Very often back when I worked in an office.

> The online whiteboard works great when one person is adding to it and it's easier to read (you don't have to deal with people's terrible handwriting) and you can save it.

We took pictures of our whiteboards when we needed to save state, it worked great!

> In most cases I've found that only one person is usually writing on the whiteboard, everyone else is just pointing at it and making suggestions. So the one person with an iPad that is sharing it's screen is usually more than sufficient for online white boarding.

I'm glad you are able to make it work for you!

> But not helpful enough to outweigh working from home

I'm with you on this! I'll never go back to an office full time.