Johns right on the $ with putting the front flap down.The cover if not attached good to the ground will turn into a kite on a winndy day.I used to tie my boat to the cover.But I went out and bought swing set anchors that twist into the ground and I don't have to worry about windy days anymore they are very strong.I dug down 8 to 10 inch then twisted them in and they won't move now.I think the Cover It shelters sell them for $5.00 pc.well worth the $$.