I am actually an AFF instructor at West Tennessee Skydiving (the DZ where you would go through the course). While we don't have a true IAF program, we have taken people on tandem progression jumps, which teaches them certain skills such as turns and forward movement under a tandem. You will have to go through the complete AFF program, but making the extra tandems help some people who are concerned with freezing up in the air while still allowing your skills to progress. If you decide this is the way you want to go, just call out on a weekend and talk to someone about it. We are very understanding and accommodating.