The system is very easy, You need a 500ml bottle (coke or pepsi) a metal tube (I found the old fashioned tire pressure gauge the best).
The bottle you first empty and burn a round hole in the side, most people say to heat the tube and use it melt a holpe in the side but i found if you use a cigerette to burn the hole in the side it works easier and ends up perfect always.
Fill the bottle with watertill under the hole then tilt bottle to 45 degree angle till the water stops coming out.
Take the tube and wrap one end in electrical tape just below the end of it to stop the tube from sliding all the way into the bottle.
Take a cigerette and push about 3 rings into the tube and slice it off with a knife, take the plugged tube and "Dab" into a shot glass (Shottie Glass) or any other bowl that is filled with your crumbled resin or herb, push it in like 3 times and place into bottle.
Burn the shot, suck slow real slow, when the heat reaches the cigerette it will burn faster or slide down the tube at this point suck really hard and Shoot or pop the whole thing into the water giving you an amazing rush as all the smoke rushes quickly into your lungs.
In reference to another definition i started shottieing in Scotland in 1995, Holland 2 times on vacation and also when i moved there in 1999. In Holland discovered an australian that knew of shotties and shottied with me for a while there, now i have reintroduced shotties to america so the shottie is known world wide.
There is a variation of the shottie, The Double Shottie that uses 2 tubes and a 1.5L bottle and 2 tubes at the bottom of the bottle it is exactly the same method as the single but you have to burn both tubes at the same time and if one pops before the other then cover it with a finger till the other pops.