Reggae isn't complicated, but if you want to do it properly then you have to put a different head on. Play with a Jamaican drummer and your perception of groove changes dramatically. The beat is on its head but when you've worked out what's happening it makes complete sense.
The best Reggae bass lines are Intelligent, fat, solid, relentless and totally locked with the drummer.
I did a Reggae gig as a dep last night with a Jamaican drummer taking care of business. We were a trio, playing mostly original songs, and we had the whole place dancing all night. Reggae is happy, good time music. I love these gigs when I do them, which isn't often enough.