This is a system that I did not create, but will show it here. I will be using Florida Fantasy 5 for this, but you can adapt this sytem to fit any p-5 or higher game.
With this system, applied to a 36 number game, you have a one in 17 chance of hitting the JP if the 3 chosen numbers show. Not bad.
Here goes: First, pick 3 numbers from your game. In the example, I'll use 1-36 in the Fantasy five. I'll pick 9-17-31. You can change the numbers for each drawing or just keep playing the same 3 numbers.
1-9-17-31-20
2-9-17-31-21
3-9-17-31-22
4-9-17-31-23
5-9-17-31-24
6-9-17-31-25
7-9-17-31-26
8-9-17-31-27
10-9-17-31-28
11-9-17-31-29
12-9-17-31-30
13-9-17-31-32
14-9-17-31-33
15-9-17-31-34
16-9-17-31-35
18-9-17-31-36
19-9-17-31-?
Total lines = 17
I left the last one with a question mark because you can fill in a number of your liking. But that last line has to be there to cover the number 19. I just use the number 36 again. 19-9-17-31-36.
Just think, how many times have gotten 3 numbers right?
That's it. Every time your chosen 3 show, you'll have a 1 in 17 chance in the 1-36 games. It may be a little higher in the larger games.