Lance,
I've been towing since the mid 60's so I'd like to think that I'm pretty expert at reversing the van, however, bought a new van in Nov 06 & had a Powrtouch mover fitted, IMHO it's the best bit of kit I've ever bought in all the years I've been caravaning!
It's now a race as to who gets the remote first, damn it she's quicker than me!!!!!!
It's got to be the easiest way to move a ton & a half of van ever! you can position it precisely, inch it out of as soggy pitch, back it up a slope with impunity, etc. etc. the list is endless!
If you're still comtemplating getting one.................just do it! you'll not regret it for 1 moment