DemoDan, I'm been enjoying your posts. Eggsy is a great name for the car. Well chosen.
By the way, it is entirely feasible to do without proper tie down straps. I have done it similar several times, in U-Haul trucks with no hooks. Wood for chalks, braced fully to the front, rear and sides, nailed into wooden floor. Having said that, I have often been accused of excess in tie downs. I worked for a while as Safety Director for a top specialty hauler (high, wide and ugly stuff). Blocking can work for a car as long as it's all smooth driving. When things go wrong, proper securing can make a big difference.