if you have a fat sac and you are trying to get RIPPED the pack up the bong
good bongs have big ass chambers and literally leave you breathless
oh and THC IS NOT WATER SOLUBE which means you are not losing the main ingredient used to get u high, a little thc wont make it but its so insignificant its impossible to tell
pipe are good for conserving, they still get you high, but getting STONED from a pipe or bowl isnt practical. plus you could pack up two bowls worth of weed in the bong and get way bigger hits and a way bigger high in a shorter amount of time
and to the OP:
say we have 2 grams, 1 grams will be smoke in a bowl. the other 1 will be smoked in the bong
The 1 gram in the bong is going to get you RIPPED cuz your hitting BIG AMOUNTS of smoke in one inhale which means all the THC in that one hit is gonna kick in at the same time.
pipes have smaller chamber so you are getting smaller hits. smoking a gram out of a pipe or bowl will last probably 2x 3x as long