Sardines want a very hot grill and about three minutes a side; anything slower and they stick and tear. Do not gut small ones and do not marinate them — salt just before they go on, oil and lemon only after.
It did not make it into the plan for these seven days.
The method above is what decides the dish, not a step-by-step recipe. The link runs a web search on the name: this page has no vetted sources of its own, and will not invent any.