ethernet bridge to the mainland
If you can't get good internet on the island (and with DSL, is it ever good?) you could look into radio bridging to the mainland. You'd need a cooperative residence with cable internet on the mainland, and line of sight. Subscribe to a second internet connection from their place. The cable company will put a T connector on their existing service. You may have to purchase commercial grade service, but it may not be much more expensive. A radio ethernet bridge will cost about $130 for both ends. My favorite is the Ubiquiti Litebeam, LBE-5AC-GEN2. It will easily handle typical cable speeds at a mile or so. You'll have the fastest internet on the island.
__________________
-lg
|