I have some blind curves like that on several of my routes. I ride with a very bright flashing taillight that's visible for half a mile in sunlight, and if I'm rounding the corner with traffic not next to me but back far enough that they will encounter me late in the curve or soon after it, I ride to the far left side of the lane, so that my taillight is in their line of sight for as long as possible so they notice that I'm there. When I drop out of their line of sight I move back to the right side of the lane.

During this maneuver you must of course listen/watch for oncoming traffic, because around here at least people like to think that their last name is "Andretti" and they cut corners badly - on the inside even with a 3 foot shoulder they'll cut to the inside of the shoulder and maybe even into the gravel within that. On the outside they'll cut halfway into the oncoming lane.