if you just want WOL working to a single host on your lan, it appears a similar method will work
1. setup that host with a static address on the lan, (and optionally, add a dns entry in the router - to make life easier with hostname resolution on the lan)
2. setup port forward like above, however, lan destination will be the ip address of the machine
3. add static arp entry for that host, i.e.:
arp -s 192.168.1.100 00:12:34:56:ab:cd
where ip and mac address match your host
the static arp entry is necessary because after a timeout period of your pc being in standby, the router's dynamic arp cache expires and can never resolve the mac address for that ip.
I'm still digging for a way to edit persistant arp entries via router configuration, etc