Fine print in my boat insurance policy Losses that are not covered: We will not cover, " theft of outboard motor unless it is securely locked to the yacht and/or tender by a motor lock or equally efficient theft deterrent in addition to its normal method of attachment" I feel I have two options. 1) drill a hole through one of the mounting bolts and attach a padlock, it would be under the surface of the water and would need changing annually I expect. 2) Lay a weld along the exposed bolt threads. Only concern here would be stray current affecting the electronics on the outboard, so could prove expensive. Any ideas or thoughts?