not necessary to have a popup blind, natural blinds can work very well especially if you'll give some thought to the compass direction when setting up to keep yourself and your blind in the shadows--just make sure to allow yourself plenty of room to maneuver and draw your bow.
not sure if it's applicable for your exact hunting location but large cedars (or spruce or fir or white pine) can make great blinds, just settle in against the trunk and clear just enough limbs to allow you to shoot. call sparingly and shutup when they start your way, i seem to get more and better shot opportunities when they have to hunt me