Probably a waste of money... wait till the Jayco warranty is almost up, then decide.
We had the Good Sam warranty on our old camper, paid on it for 8 years, and never had to use it.
It was about 50.00 a month... We could have put that $ 4,800.00 in a savings account, and it would have been there if we needed it.
Oh well, live and learn!