Sigtrygg
Emperor Mongoose
There is no lanthanum grid. Lanthanum is used in the drive coils. There is a hull grid, but it is not mentioned what it is made of, whereas the lanthanum jump coils are explicitly mentioned.Tee/Five has three options, one that you can use for damage control for the lanthanum grid.
In theory, you could use a jump net to cover protruding parts of the hull.
Though more literally, you could cover the hull with in like camouflage netting, and dispense with the jump bubble.