Jaci, I just came across Garden Gear's 'gadget' page online, and thought of you - there might be something of interest here?
http://garden-gear.co.uk/FORMgallery21.htm Hope you are getting on well in your garden
I've got most of those, they have their uses but don't directly attack the planting-out problem.
A decent pair of kneeling pads used in succession to crawl around relatively painlessly is a great help, you don't have to get up to move along.
Allan