I have heard and read on the internet that ND filters are enough. To back this up I have also had a reply to a private message from a member of this site who is experienced in solar photography;
"You should really image the sun with a solar filter, but ND5-7 is good without looking in the view finder. Use live view if you have it."
"For totality images are f5.6 at ISO 100 starting at 1 second and moving down in shutter speed to 1/4000 of a second will get you some nice images.
Try imaging next week to get some practice. All through the partial stages use ISO 200 at f 5.6 and shutter speed of 1/2000 of a second. You will capture good detail even in white light. ";
