Am pretty new to fishing and here. I fish in the Punggol and Sengkang area using dead prawns as bait. Currently trying a basic bottom fishing rig (the fish finder rig? According to Google lol). I keep having my prawns stolen by crabs (even hooked up about 4 thunder crabs— 3 by luck using Sabiki w/ dead prawns (small hook got stuck in their pincer) and 1 by hooking onto the bottle w/ crabs in it. Google suggested something like arma mesh but is there any DIY solution or like a crab proof rig? Any advice welcomed. Thanks in advance!