A two-piece clamping system for creating a reinforced attachment point for tarpaulins or the like includes a \u201cY\u201d-shaped bottom clamp with retaining slots on its bifurcated end, a securing groove within its body, and an extending tab with a grommet to receive a carabiner or hook for attaching the clamp to a support structure. Also disclosed are methods for applying organometallic films to substrates and the organometallic films themselves. Where the power cell comprises a plurality of cells, preferred configurations may include glassy carbon as bipolar electrolytes.