Since she will be indoors part of the winter I don't want to do shrink wrap. So I'm thinking of one of these tarps. 11' beam x 28' length might indicate 20x30 but that doesn't take the bridge into account. What do you think? Are the heavier duty tarps worth the extra money or do I need to be more concerned about their weight? At around $50 the lighter duty ones are practically disposable.
BLUE POLY TARPS
8x10 square inch cross weave count, 5 mil. construction, 800 Denier
Blue Poly Tarp with 2.75 oz. per square yard material weight and 8 x 10 square inch cross weave count. Sun and Fade Resistant, Rot & Rust Proof with a Heavy Duty Double Laminated Coating.
Features include: 5 mil. thickness, fade resistant, heat sealed seams, 3/16" poly rope in hem with aluminum grommets about every 3' around the hem. Blue on both sides.