Lol.
Of course you can mate, but the idea of stocking the lake on the sly, is not to have loads of mad carp fisherman turning up with a mountain of gear to fish for days on end (which they wouldn`t get away with anyway, with it being private land ).
It`s for me and my lad to fish for a few hours during the night in the warmer months and to watch the pond turn from what it is now - fishless, into a thriving environment not just for fish, but also for the likes of frogs/newts/ dragon flies and all the various aquatic insects that live in ponds.
The bats and swifts have already found it and are hunting like mad over it, plus there`s mallards and canada geese there during the day.
There's a lot here, so let's get to it.
In the hierarchy of knob-head birds, I think geese are silver medal to swans.
Where are you considering borrowing the fish to stock this pond/pit with? And does the land owner have any idea of your plans? Do you know whoever it is?
This next bit is best though, about 3 hours ago we established you've never had a rod licence, and now you've set yourself up as the anti carp fishermen cops. You must be somewhere fairly secluded, how sly do you reckon you can be you and jnr? Would it not be worth finding a small local anglers club and introducing him through that? With a bit of structure and law following it'd make getting into the game a bit more straight forward?
cowboy ninja skirmish fishing might be a bit stressful from the off?
Reading your post back, I guess the rampant weed is what's choked the water off sustaining life thus far, but if you tidy that out might you find another problem, in that is it a body of water that takes run off from local fields or is part of a stream system? It might be worth getting the water checked for contaminants as you'll be heart broke if in 12 months time and a load of hard work that a flash rain fall has washed a load of fertilizer through it and killed everything.