You are actually on the right course.Set your front anchor as usual. Sight in the spot where you want to end up, and back past that spot either by power or keep tossing your stern anchor back and pulling the boat
to it while letting out more line in front. Once you are wall back passed your desired anchor spot, leave the stern anchor and pull in on the bow anchor while letting
out stern line. when you get to your desired end spot, your rear anchor is set and you are pulling horizontally setting it deeper, while you are doing the same with the bow anchor. Pull both lines tight and cleat them and you are set with enough scope so you are not pulling upwards on the anchor. When youre ready to leave, let out on the bow anchor while you pull yourself
toward the stern anchor. When you are above it, pull upwards to dislodge it and repeate the process to dislodge the bow anchor.