I do this except loading not tipping. On weekdays I collect a back load of palletised freight but with a fridge trailer. Even with the cab suspension down and the trailer suspension up which creates a helpful slope in the right direction, pumping, turning and positioning 23 heavy pallets gives me a gentle workout.
I sometimes did tipping that way sometimes loading, and either way it, at the least, stretches the body out a bit after a few hrs sat in the seat.
On odd occasions I did some hand ball and never minded that too much either. A pallet or two of goods on the floor can become palletised and loaded at the front of a box trailer with some exercise and a little though adn a hand plt truck, no need for any FLT.
But there is a trick to it. 
We were a little more advanced in France. On our major contract, Lidl stores throughout the SW we were expected to load ourselves with electric trucks. No training, no experience, just get on with it. The first time I encountered it I refused on the grounds that I was dangerous and they did it for me, but it didn’t work everytime.
Most of my work was in France for the last 20 yrs. Mixture of hand and electric trucks.
We did work it somewhere that even with an electric truck you will walk for …can’t remember now…your daily requirement anyway.
I’ll buy a packet of fags so I can work it out again.
After managing to teach myself electric pallet trucks I then faced the next problem, stolen keys, especially at their rdc at Cadeaujac. Mainly it was drivers who made the problem worse by keeping keys for themselves to save searching time next time. 
First look at walking the plts off the truck.
The plts on the door, zero walking. Plts on the headboard about-ish 15meters (3 point turn needed). Then we walk back empty for each plt.
So we have 32x30 to tip. Call it very roughly 1km.
If putting the plts across a quay into warehouse. Then the area of the plts is approx that of the trailer (it is more but my fag pkt is small). 1km to store
Plus distance from back of trl to store area. 15m? That keeps it very simple as we know that is another 1km.
So,
Tip to back doors 1km.
Tip to warehouse 3km.
Open to correction, which is why I included workings and assumptions. 
Assuming 32 euro plts here.
3 shops down 2 to go
Light ones today. We do have cage movers to use if we choose. I can’t be arsed with the faffing around though
No one told me they operated this system of loading when I went as Agency some 15 years ago to deliver bread out of Orpington, After a 2 hour wait for the lorry to be loaded I started to work my way down the A3 to Southampton. Took two drops off and reloaded empties and the next accessible drop on the load is Southampton so I went there and ended up doing the deliveries in reverse order and bringing Farnham and Aldershot back. I’m not psychic. 
I joined this forum in the hope I could find someone that operates cranes and you might be the man. I’m currently operating Pedestrian cranes (remote controlled) but everytime I see the alrger mobile cranes turn up on site I always have the urge to try to move onto these in the future. I have a few questions and wondered if I could bother you with them pal?
Sure! Send me a message
I’ve ended up buying my own complete set of keys for various common fork and pedestrian trucks, from amazon for around £6.
But then you come across a newer one operated by either swipe card or PIN and of course no one on duty knows the PIN or has a card that operates it so you still end up using a hand pallet truck 
Its tech gone mad