You'll want one of those cellular internet or broadband devices. It can be that USB stick or the little box device.
As to VPN, I never bothered with that on my MiFi or USB sticks. I did however use WPA2 if I was creating a WiFi hot spot.
Coverage is what it is. I rarely see coverage maps over the water but around harbors it should be fine. Each carrier varies so any coverage question or costs is one for the carrier.
We will be spending the summer cruising the New York and Canadian waterways and canals. We have a Dell Laptop with a WiFi card, but we need to have a secure connection most of the time even if there is no WiFi available. We do our banking, work, etc., every day on the internet. I am thinking of a Verizon USB data stick, and a month to month plan. Will this do the trick? Do I need to add a VPN. I've used HotSpot VPN with good sucess on WiFi and hotel connections, but not with a "cell phone" type connection. Will this set up also work in Canada?
Thanks for any help