Firewall load balancing

Hello,

Looking for some guidance on how to configure firewall load balancing. I had thought this was a popular thing, but the lack of documentation has me thinking that maybe no one does this anymore. I guess firewalls are generally fast enough nowadays that you don't need to do this, but in my case there are two problems:

1) The firewalls do a lot of application-level stuff which slows them down 2) IPS's are also inline, which aren't nearly as fast

So I need to do firewall load balancing with a couple VIPRION chassis. But I can't for the life of me figure out exactly how to configure the virtual servers so that they're fully transparent. What type of virtual server should be used? A forwarding server doesn't allow me to configure the firewall pool. A standard server isn't transparent -- the F5 appears to terminate the TCP sessions on each interface, which is no good (I just want them passed through).

Any tips would be greatly appreciated!