Yeah, they're a real pain when chumming.
I've got a funny remora story. One of nephews, who was quite "plump", went on the boat with us one day and was laying asleep on the bow when my daughter caught a large remora. I unhooked him and placed him on my hephew's belly, where he obligingly sucked down tight. When I finally peeled him off, he left a hickey that would've made a shop vac envious.