For extended times,
I would run two lines through the doohickies at bow like two span-sets. If you are on a mooring, I would use at least 3/4" line and at least 15' of scope (that would make 2 30' span sets).  Additionally, I would get some leather, fire hose or garden hose and make chafing guards at all rub-points.  The previous suggestions are from bitter experience.  My old boat a 30' Hunter went walk-about in Sarasota Bay off of Oleary's when I was away from her an extended period.  Lucky for me I kept a CQR on the roller at all times.  A good-hearted and fool-hearted fellow cruiser rowed out in his dink, caught my boat and set the CQR leaving me 10' from the rocks!  Saved my home!Fair winds!Griffin.