LAN speeds are cooler than WAN speeds when dealing with wireless. If you can't saturate your Internet connection on your wireless AP, something is bogus.
Show me some PC to PC transfer speeds with your setup.
I didn't say bogus. I said LAN to LAN is more interesting. Wireless is what I do, both as a hobby and a profession, so I like to see how techs who take it above and beyond off-the-shelf are accomplishing things.
Heater hose is not going to shield much RF energy. You should run the cables down behind or in front of the router instead of up between the antennas. You could shield them with metallic braid. As high up as you have that router, you could even turn it upside down and let the antennas hang down and still have good results.
I use a peer to peer network whenever one peer has to go, the other one has to wait his turn.