Interesting that there are no female comments on this thread. A lot of women say they don't approve, but the ratio of approvers may be higher on lpsg than in general?
Personaly, I hate board shorts.
For skimpy swimwear, I find that there is a range of options. You can have largish pouches or not, lined or unlined, and color patterns. Also, there is a range of styles to suit every need, so even well-endowed men can wear them without falling out, being too tight, or showing too much genital outlines, wet or dry.