Wireless Remote

Your best bet at this point is to buy a full fledged Windows Tablet and run Hog3PC as a client on the tablet.

I am all apple can you recommend an inexpensive windows tablet

I also have a Mac pro set up for Windows 7 could this work ?

This would work if you run it with Bootcamp, but is not officially supported by HES. But a lot of people do it (incl myself)

I have a programmerwing attached to my laptop.
With a virtual machine you have to take care of some stuff, but just for focusing it also works.

If you will be on a HOG4 system one day you can take advance of OSC and an ipad app called TouchOSC

Depending on the level of "focusing" you're doing, if you don't need encoders (for movers) and just bringing up channels, you can do it with TouchOSC using a USB Midi device on your Mac. It's REALLY easy with Mac.

However, if you're doing movers, the best (and really only way) with Hog3 is to have a PC client. I use Bootcamp/Parallels all the time. For basic focusing, I've always just done parallels with a programming wing.

Here's the TouchOSC templates I made for Hog 3. These are for iPad.
housetohalf.net/Housetohalf/iPhone.html

or do what I did once...

Run Hog3PC on a networked computer, and plugin a wifi hotspot, Get an Ipad, run remote desktop to the PC through the wifi. Then you can run the whole board from the I-Pad.