We rely on a snubber I fashioned from a 20 ft 5/8" 3-strand nylon dock line. After securing the looped end to a bow cleat, a galv chain hook, which slides freely along this line, is clipped to the chain - after pulling slack to the rode. This setup allows multiple snubber length adjustments while securing the set anchor, eliminates strain on our windlass and also enables me to firmly powerset the bottom tackle without damaging the gypsy or windlass mounts.
To secure our 35# CQR while underway, Nauticat provided a custom fabricated device shown in this cropped photo:
Not very clear, but it consists of a stainless turnbuckle welded to a threaded rod. the bottom is shackled to a deck pad-eye, the top has another specilized shackle which attaches through the anchor's shank eye. Works very well, especially with the otherwise problematic, high bulwarks of the boat.