Not sure ar we talking abought same thing but,
Best solution to avoid that huge crack, at shorter strips, is to cut them different leinght. Lets say that first strip is 40cm, second is 30cm, 3th is 20cm, 4th is 10cm and 5th is again 40cm, 6th 30cm and so-on... Only problem when u make full lenght strips is that front and end have huge tension(is tension right word?) and middle at strip can rip of at bulkhead. Try avoid long strips. Specially at firts planking. If u plank second layer, whit thinner strips, this is not so big deal.