Trolling with extended leaders without large downrigging gear is what LongLiner does. Suitable for lines and leaders from 6# test to 60# test (up to 125# test in spectra lines), LongLiner is a valuable tool for small and large boats, including kayaks. LongLiner allows long leader presentations at controlled depths delivering a short leader when landing a fish, when control and a short leader is best.
Some call this "the tackle box downrigger."
Go to video links below for more information:
Rigging Instructions in video format:
My other video demonstrations:
Kayak Angler Magazine:
More information on the LongLiner® (pdf's for download):
Trolling and River Apps