Trapeze handles for singlehanded hooking in?

I recommend making up some prototypes using plastic plumbing tube (or similar) available from Wickes, B&Q etc. If you buy a drill capable of making a hole of the same outside diameter as the tube you can easily modify some plastic disc handles to slide over the top and provide a handhold. Rope down the middle takes the load, use your existing hooks and the whole lot costs approx £5-£10 plus drill, plastic handles, tape and rope.  You can then experiment with lengths and arrangements.  I kept a normal trapeze adjuster above the handle, but have seen alternative approaches turning the system upside-down and using kite-surfing clam cleats. Once made you can experiment by tying them up to some suitably high point (a tree, building, even a stairwell) then you can practice hanging off one arm and hooking on/off.

People have made beautiful custom carbon tacking sticks, but I never thought there was an appreciable performance benefit over simple plastic tube (less brittle too).  I recommend the Blue Peter approach before you commit to spending serious spondooleys.

I found them great for speeding up gybes (in a Musto Skiff) and allowed a slight increase in speed in tacking, but then I never felt comfortable with leaving the mainsheet cleated and committing to a full wire-to-wire tack (note: I tried them,  but reckoned 9 out of 10 was not good enough.  I think even a 5% failure rate will make it not worth it in terms of race results).  In summary if I went back to Mustos I would definitely build another set of tacking sticks.