Hi Chris.
All I use are a pair of those cheapy orange ramps and a couple of chocks (the non cadbury type)to level our van. below is a copy of a thread I've posted several times on the method I use to get us level.
We have a very rare Link 575 twin axle van, which as the name suggests has the axles linked together simlar to those on six wheel trucks. This means that as the front axle goes up over a speed ramp for instance, the rear axle goes down to compensate. thus no weigth transfer on the car. The down side to this is no matter how high you raise the van, with the jockey wheel, the wheels are firmly on the ground. So levelling the front axle is out of the question.
All I do is back the van about 4 feet past where I want to end up. Then place two plastic ramps, the first at the front of the front wheel of the side to go up, and the second infront of the first but with a gap wetween the top of the ramps (pitch) equal to the distance between the axles on the van (41 inches in my case. Then I drive the van up and over the first ramp and then both wheels climb up the two ramps to the height required. Chock the wheels and then level front to back as normal.
Sounds a little complicated but this only takes about two mins to do.
It's true to say with a longer van you have less height adjustment front to back, as such I try to pitch my van on a sloping (mountain side, traslation from the brochures)pitch, so that the min adjustment is across the axles, which is the shortest distance between pivot point and elevating end.
It's not always possible and I have ended up with the door so low I didn't need a step to get in which was a bonus. But two milk crates and neumerous planks of wood under the front steadies looked quite precarious. Not to mention time consuming.
Steve Ll
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