Here are some suggestions on compensating ISA's:
Bonuses can be compensated on 5% of gross income (GCI) after closing. Some real estate teams pay as much as 10% of GCI.
Other teams prefer to pay bonuses of $50 to $150 on appointments conducted. Never pay bonuses for appointments merely 'set' since this typically leads to a lot of cancellations and low quality appointments that waste a lot of time and resources.
Either way, attract higher quality candidates by listing the upside potential in the Compensation section of your job ad!