This is the system I've been using for the last two campaigns, approx. 3 yrs. I always found the existing turning rules unsatisfying at mid and higher levels-eg, a 10th level cleric can't effect a CR 8 adult red dragon skeleton because it has 19 Hit dice. I've also adjusted the various feats to be in alignment with this variant system.
Turning/Command
Positive Energy (Good Clerics)
Area of Effect-30’ radius
Damage-1d6/cleric level
Save-Will DC 10+1/2 cleric level + Cha bonus
Negative Energy (Evil Clerics)
Area of Effect-30’ radius
Save-Will DC 10+1/2 cleric level + Cha bonus (Applicable only to Command)
Effects: Heal undead 1d6/cleric level
Bolster Undead by conferring turn resistance of:
Level Turn Resistance
1-3 +1
4-6 +2
7-9 +3
10-12 +4
13-15 +5
16-18 +6
19-21 +7
Command-Undead failing their will save are commanded for 10 rounds. If the commander has HD equal or greater than the target it is permanently commanded. A cleric may not have more permanently commanded undead in this fashion than he has clerical levels.
Effect of Skills
Knowledge (religion)-+2 DC if 5 or more ranks
Effects of Feats/Abilities
Disciple Sun-Maximize damage by expending an additional turn
Empower Turning-Turning damage is x 1.5
Heighten Turning-For each 1d6 of damage sacrificed, up to maximum below, gain +2 DC
Level Max dice sacrificed/DC bonus
1-3 -1/+2
4-6 -2/+4
7-9 -3/+6
10-12 -4/+8
13-15 -5/+10
16-18 -6/+12
19-21 -7/+14
Improved Turning-+2 DC
Quicken Turning-turn as a free action, but only once per round
Sun Domain-Maximize damage 1/day
Effect of Turn Resistance
Turn resistance is a bonus on the will save which stacks with all other bonus types. It also reduces the damage inflicted by the amount of the turn resistance.
Spell Effects
Consecrate-increases DC by either 3, or 6 if it contains an altar or other fixture
Desecrate-reduces the DC by either 3, or 6 if it contains an altar or other fixture
Hallow-Increases turning DC by 4 for and negates up to 4 points of turn resistance on damage inflicted. Decreases command DC by 4 and –4 all healing results for undead.
Unhallow –Decreases turning DC by 4 and confers +4 turn resistance. Increases command DC by 4 and +4 all healing results.