Yeah sure, it's quite easy and don't know why more people have done it, symmetry ftw. But this is what I did, I should have took pictures of the process but nevermind, got a couple from afterwards.
First thing was to remove the lock and connecting rod, which is pretty simple I forget how it comes off though.
Then before you close the tailgate!:
Fit a solinoid to the catch, I used a cheap ebay boot popper kit but throw the switch away as they're crap and will break. You'll need to run a 12v positive fused wire from the battery in to the tailgate, did it directly from the battery rather than cig lighter so I can open it without having a key in ignition. Trickiest part is getting the solinoid to pop the catch correctly.
You can make out where I put it here, as that's the mounting bracket bottom left.

But to open it from the outside, I installed a second wire from the battery (actually, a connection block from 1st wire in footwell) to a key switch, for security, that I positioned under the handle. But since I've installed remote central locking I just use the key fob instead.

Quick diagram of the wiring I used:

Then you've got to fibreglass or weld the hole, or holes as I did the wiper at same time. I used fibreglass, started with a couple of bigger bits from the inside then you can layer it on top from outside. Then it's filler, filler primer, primer, base coat, then laquer, with a hell of a lot of sanding in between!