Haven't tried the Eye-Fi card. I personally have been using a RAVPower 5-in-1 wireless filehub. It works as a card reader, Wi-Fi hotspot, file server, media sharing device and a 3000mAh battery pack. It allows you to transfer and share files from your SD cards/hard drives wirelessly. My family and I often use it to stream videos and we have tried that on five devices at the same time, there was no problem. It's amazing. More than that, it saves life at some situation with it's battery pack.
would be great on public land if it does as you could then mount the camera out of sight up in the tree and just walk to it and download your pics.