SNAT iRules for Multiple Gateways

I've run into two problems:

 

 

1) I can't figure out how to create a Firewall gateway pool for a device that doesn't respond to pings, I know it needs to to have transparent monitoring but I can't seem to track the docs on creating that, I see it say see the section on creating pools but in that section it doesn't tell me how to get a custom transparent monitoring rule to show up in the monitoring drop down for new pools, maybe I need to change the default gateway_ICMP monitor to be transparent?

 

2) I have around 70 pre-SNAT IP's that are not in ranges so for example 192.168.72.2 might need gateway 1 and .3 to gateway 2 and .4 to gateway 1, so was hoping to use post-SNAT, any thoughts on that? Maybe I could use pools?

 

 

Thanks,

 

Shawn