I made my floppers based on some I saw on a big wooden trawler moored in the 'duck pond' at Townsville. The bloke just used a security screen door and wired some rubber mats on them and then hung one on each end of a yacht mast that he lashed to the cabin roof.
gotta love some guys !!
Any how mine were a little more elaborate as they needed to be able to be packed away when travelling by road.
The pics of the floppers are a bit of perspective to size in the pics - my floppers measured 1 metre x 700mm each as my boat is a minnow compared to the trawler who had 2 whole screen doors.
1. I scored a window security screen from a demo site and cut it in half with a angle grinder.
2. Went to Clark Rubber and bought some rubber mat and screwed it to each end of the screen and then sliced it down the middle with a Stanley knife.
3. Bought a 6.5mt length of 40mm ally tube from Capral and had them cut it in half and also 1 mtr of 25mm tube. 4. Got two '90 deg. 25 mm 'T's' from Whitworths and put them on the hand rails.
5. looked in the shed and rustled up some old cray pot line for hanging the floppers from the poles and securing them at the preferred angle to the boat.
PIC 5 Slide the 40mm tube over the 25mm ally and all the way to the 90 deg elbow - this holds it from rattling or moving about
PIC 7 This flopper is actually opening in this pic - remember the other flopper at this time is closing and cancelling the roll.
You should be able to conclude how I went about assembling the flopper and hanging them by looking at the following pics. Getting the angle of the poles is up to you - I had them far enough away from the side of the boat so the tinnie could be brought alongside for provisions etc.
The whole show cost less $150 to make
Hope you guys get some ideas and make 'em as they are rippers