If you become an LP you can get access to holdings at least for some of them. Absent that, why would you be any more entitled to seeing their trades than them seeing yours?
Only large investments from official 13F filings that are several months old and often no longer relevant. whalewisdom.com is one of many websites providing access to those filings. While generally the whole concept of hedge funds is based on secrecy. Even some ETFs are awaiting approval of new rules allowing secrecy, because they don't want to reveal details of their strategies.