Chris,
Are you sure you've set your hose up to the best effect?
It looks to me like you've very little hose inbetween the pole and the backpack, which means you'll have to keep moving it all the time.
You should be able to do the front, side and rear of an average semi, just moving the backpack once after you've initially placed the backpack at the house.
Also, the ideal pole hose to use (in my opinion) is Ionics.
I'm pretty sure that's a Gardiner Pole, as I recognise the clear hose (which is difficult to 'nip' shut), but with Ionics hose it's extremely easy to bend-over and stop the pump; it saves you having to turn the backpack off (and then on) all the time.
Given that it's generally not feasable to use 'extra hose' (although I've tried), with a backpack, Unger poles are excellent as they have the hose on the outside. This means you have extra-reach with your pole from the backpack as the hose goes from a straight line from the brush head to the back pack, rather than all-the-way through the pole, then to the backpack.
I'd also advise you to get a spare battery. The battery it comes with is great, but after six or seven months of constant use, without warning, it just dies on you.