If you do a run, i'd suggest two larg pegs in the ground with a wire between them - that way he cant jump and choke and it also means he can run around with out getting tangled up and on a veeeery short tether.

My JRT wonders too - only to neighbours we know but to keep him chained up we get a big bone (Roo tail is good) and freeze it. then give it to him, it takes about 6hrs for him to chew the meat off it and then forever to chew up each of the bones in the tail. as for barking while tied up - you can get a "no bark" muzzle they can still eat/drink but they cant bark, we almost got one for another dog we had.