Again, let us steer away from the ridiculous solution that you keep pushing forward. The original mention was clearly meant as a joke. If you seriously want to spend a few hours assembling a dish and aiming it so that it's accurate within a tenth of a degree in order to get the accuracy needed to beam a signal over 3 km, go ahead. But the project should be either for fun or for developmental purposes for a greater goal, not for something like this, where there likely exists a more practical solution using the existing Internet connection.
Seriously, you guys are suggesting something akin to bringing in a crane to drop a giant block of stone onto a car in order to crush it.
I thought we'd already agreed that his best option, if his internet can handle it, is just to stream it using that? We were only discussing satellite dishes as an alternative if that fails, because honestly, other than the initial cost, it probably would be the most efficient solution if the upload speed of his home internet connection isn't up to streaming video. I have a friend who lives on a farm who set up something fairly similar to allow him to get internet access from one of the farm buildings, which is a good way from his actual house, and it works brilliantly for him.
If it's possible to just stream the video to the clubhouse over the internet, then that would be the best option, of course, but if the internet speeds aren't up to it, and the factors I mentioned in my last couple of posts aren't a problem, then I actually think a wireless link would be the most efficient (though also probably not the cheapest) option. Unconventional, yes, but potentially the best option.
But this is coming from someone who would massively enjoy building a pair of directional wireless antenna to set up a long-distance wifi connection, and if I had the money and the need for one, would do it even if it wasn't the best solution, so...
It's not nearly as extravagant as you make it sound, either. Wireless connections like this are actually very common, they're pretty much the standard solution for small businesses etc who need to stream data between two sites.
As for the difficulty of aiming it accurately, it shouldn't need to be perfect. The dish would probably have a 40 degree angle or so, which means it wouldn't need to be spot on at all (though the closer the better), so long as it points in roughly the right direction.