I'm doing a track for Hinterman and it's got these long sections of groove where the kick is real straight on the 1st two bars and then has this triplet feel on the 2nd two.
I can relate BP, unless I'm well rehearsed, (and there is a difference between rehearsal and practice, the former being with the group and the latter being solo without the time constraints,) Triplets give me fits unless I know where they're coming and how the players around me will interpret them.
The foundation and "drive" of any song tends to come to life when the kick sits inside the pocket of the open E on a bass guitar. If you can clearly hear the punch from the kick while the bass guitar is thumping an open E (for example), then you're pretty much "there". In that respect I tend to think the kick is an extension of the bottom end of the bass guitar.
Rab
Rab, I agree (and disagree) depending on the tune.
I believe that the bass guitar can change the "feel" of a song by the subtle task of playing just in front or just behind the drummer. Let me explain, if you take a quality drum machine and set up a basic beat that is quantized to perfection, (exactly on the beat). You have the control to move any "part" of that beat forward or backward.
If you take a good drum machine and set up a simple 4/4 rock beat and move only the snare drum forward in that pattern by 5/100 of a beat, you will hear the snare drum "pushing" the tempo of the song
without changing the actual tempo of the song. Inversely, if you slow the snare by the same amount from the original beat, you will hear the snare drum "lag" behind by a smidge giving the song a blues feel.
The same effect can be accomplished with the bass guitar when the drummer is right on the beat. You spoke of the bass guitar doing what I would call "droning" one note. If that's the line you're going to play, (and there's nothing wrong with that), then I agree that it should be right in the rhyme pocket.