On really long surface swims I hold my GPS in my hands so I can observe my course deviation. Going out I try to sight on marks to keep my course. Returning is more problematic and requires the occasional head turn plus following my GPS bread crumbs. Of course, the occasional head turn is always good to look for boats etc.
You would want to lift your head is belly swimming with a snorkel for the same reason, at least on my back, I might can also hear them just before I get run't over.
Some of my longest swims have been with no BC of any sort, face down, with snorkel. But, if I got a wing, I am rolling over into my easy chair, popping my mask up on my head and paddling along. If I gotta have a sissy BC wing, might as well be comfortable.
N
You would want to lift your head is belly swimming with a snorkel for the same reason, at least on my back, I might can also hear them just before I get run't over.
Some of my longest swims have been with no BC of any sort, face down, with snorkel. But, if I got a wing, I am rolling over into my easy chair, popping my mask up on my head and paddling along. If I gotta have a sissy BC wing, might as well be comfortable.
N