How To Strengthen An Aluminum Boat Hull How Can I Strengthen Wireless Signal With Aluminum Foil?

How can I strengthen wireless signal with aluminum foil? - how to strengthen an aluminum boat hull

I live in a building with two houses and a Linksys wireless router is configured with one another in the house, I have a 1 or 2 bar signal strength and internet connection kept falling again. So I went out and bought a Linksys Wireless-G Range Extender and strengthen the signal by 25% and the bridge signal 2 to 3 bars and Internet access at all times remain low. Is there a way to reinforce with paper?