Motorised Jockey wheel

I have not seen motorised jockey wheels ,unless used models, for years, they were quite heavy that I remember, some were wired via the leisure batt others had their own batt and were not a permanent fixture

One problem I think was they were not Good on anything but even/hard surfaces 

Yes, I thought those things had died a death.  You can get an extension handle/arm that fits into the hitch ball on your caravan but they do not have any power.  If it is too much heaving your caravan around manually I'm afraid it is a motor mover.

PS you can give yourself a nice name and add a picture on here by going into 'My Profile'

I briefly used a Bigfoot. I was pushing 900kg slightly uphill through gravel. It clipped onto a separate battery that I sat on the A frame cover. I used to have to lean down on it to get the noseweight grip I needed.

As stated above they are not really effective on anything other than a hard surface.

They are not really designed for carrying around in the boot of your car between sites, but for storage use. They definitely cannot be left in place when towing.

If you store your van at home on a nice hard flattish surface then it is worth keeping an eye out for one. They do come up second hand for low cost, about £100.

Colin