A lot of sights have ways to add some sort of light. Check the website for the brand you have and see if anything is available. There are additional lights that can be added as well. As far as the blind goes it's hard to say. Sometimes you can put one up and they don't notice a thing, other times they do what they did to you. Perhaps they saw you move inside though. Never put your face up to the window to look out as they can spot you easily that way. Wear the darkest clothing you have inside, some even wear just black. As far as your seat goes you need to find something comfortable, even if it's an old kitchen chair. Needs to be comfortable first and foremost if you plan to sit long, secondly it needs to be quiet. If the ground under the seat is uneven you need to take a shovel or something to level it out. I use a camouflage folding stool with a back on it. Often it gets uncomfortable so I take extra jackets to put on seat or back to help make it comfy.