And hope that there isn't someone else with access to a boat who isn't bothered about whether people survive the crossings? Whilst there are desperate people there are opportunities to exploit them, and there is never going to be an end to unscrupulous people willing to do the exploiting.
This is an issue that needs to be addressed at the source - we need to dry up the demand for immigration, not try to ration the supply. Rationing the supply with a high demand just makes the people more desperate and the suppliers richer.
O.
I'm not sure that sending foreign aid and ending weapons supplies is going to achieve that on its own, though it would help.
I think the problem is that geting a visa to live here is far too expensive. If people can afford these requirements, they clearly don't need to come as much as those who are coming from poor backgrounds. So I would float the idea of having a cap on visas but give a large proportion of them to those who otherwise turn to illegal and dangerous methods of entry. Give those who turn up and camp on the French coast priorty. There could be a waitng list and creature comfort facilities near Dover etc for while they are waiting.