A few simple jigs I do are "Haste to the Wedding" (pretty much Perlman's version in his Basic Clawhammer book I do this one in the key of D on a double C tuned banjo (capo 2) "Road to Lisdoonvarna" also in Perlman's book. done on the banjo tuned to G & "Kesh Jig" also done on a G tuned banjo.
I think you have to re-educate but not relearn the right hand. You must use alot of pull offs & slides & such. But I still maintain that the primary reason jigs aren't done on a five string is because they just are not introduced at all to beginner banjo players.
I consider myself only a fair clawhammer player, not even close to Perlman's level. So saying that jigs are too difficult is a cop out (in my opinion.) Check out any banjo tutuoring book (or even any flat pick-guitar book) And you will not find jigs untill well into the intermediate level. Most people who play around don't ever progress that far in their learning material. The Russ Barenburg guitar material that I learned my first jig from is at Homespun's Level 3. So unless your education has been intirely Irish you just are introduced to jigs later than I think is proper.
Just my opinion Charcloth