[poacher]

if on a boat dive for bigger fish you could carry a spare gun completely rigged or if on a holidaay where your away from home for more than a day or 2 take spare shafts spare line for shaft spare flopper and pin or spare tips if you use screw on and spare rubbers if your just on a shore dive close to home for a few average fish its easier to just take the minimum you need to hunt and hope you don't break or loose anything .
Rubber are easily made from bulk rubber and dynema you can use lead sinkers for the balls on the ends of dynema bridles. or buy the brass ones and take some of the line for tying the bridles on to rubbers.
Rob Allen shafts are not overly expensive so a spare can be bought easily. ususally around $50 or $60 to the best of my knowledge.