beester
Contributor
If your dive is primarily a site seeing expedition, then a buddy can make little (and maybe big) problems easier to deal with and their presence shouldn't really get in the way.
However, if you are on a "mission" to take a photo, a video, cover a certain considerable distance in an efficient manner, or you are trying to catch lobsters or fish... then coordination with a buddy often is not beneficial and can be a hindrance to your productivity.
If the visibility is really low, it also takes a lot of effort to maintain good buddy contact. I think the type of diving you are doing also is a big factor in how "helpful" a buddy is on a typical dive.
I don't really agree with this. It really depends on the team. I've been involved in project diving were we had to perform complex tasks at depth (from taking measurements, to documenting artifacts to full photogrammetry (3D) of a wreck).
For example photogrammetry would involve 1 team jumping ahead of the recording team to lay a line matrix on the wreck for the photo team to follow, then you have a 3 man team doing the recording where the middle guy is recording following the matrix lines at 30cm above the wreck, 1 light diver diving right on top of the recording diver shining his light in front just before the focus point and a 3rd light diver diving right behind the 2 divers shining under and to the front... this in bad vis, lots of current, situation, with entanglement hazards. This for more than 120 hours underwater involving always at least 4 teams in the water collecting more than 2 Terrabyte of data, to create a 3d model.