As Bob suggests, this conference is more for those training in a pool, working their way gradually toward a mile.
As for 2BK,see Syzygy's post in the "Another Skinny Male" thread on the Freestyle conference.
And for increasing your distance capability, see my post in the "Next Step Help" thread, also in Freestyle.
Head Coach & Chief Executive Optimist
May your laps be as happy as mine.
My TI Story