Trolling Motor powered by lithium ion 18650's?

[lincpimp]

Well, I would take a copper plate, draw a grid pattern with the lines spaced the diameter of the cells. Punch 1/4" or so holes where the lines intersect and solder the cells thru those holes. Wrap the packs of 30 cells in something that can be removed, such as large shrink, then place them in a waterproof box of some sort that has padding (closed cell firm foam?) on all sides and between each pack. Wire the packs in series with large gauge wire and add a balancing tap for testing purposes.

How much did those cells cost and where did you get them from?