demo1, the rules relating to the 'weighted draw' are pretty clear.
If we finish bottom 6...
Bottom six: Clubs ranked 13-18 on the ladder will have either no return meeting or a maximum of one return meeting with clubs ranked 1-6. They will have a minimum of one or a maximum of two return meetings with clubs ranked 7-12. They will have a minimum of two and a maximum of three return meetings with other bottom six clubs.
The final finishing position of the Slime comes into play here.
If they finish top 6, we will have: no other games v clubs 1-6; min 1, max 2 games v clubs 7-12; and min 2, max 3 games v clubs 13-18.
If they finish middle 6, we will have: min 0, max 1 game v clubs 1-6; min 0, max 1 game v clubs 7-12; and min 2, max 3 games v clubs 13-18.
www.afl.com.au/fixture/fixture-explained