I have never tried whoopies but I have tried other two-part suspensions and always found they weren't for me. I have to carry the straps anyway so an extra couple of feet didn't seem to be a bother. I carry two 12' straps and use Elephant trunks on the end to connect to the hammock, a system I really like. 12' is probably a little excessive but ya just never know? YMMV
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Deep peace of the running wave to you.
Deep peace of the flowing air to you.
Deep peace of the quiet earth to you.
Deep peace of the shining stars to you.
Deep peace without end to you.
adapted from - ancient gaelic runes