Book against the calendar, not against demand
Shutdown dates are usually fixed 6–12 months out. Book against the calendar, not against demand — every week you wait is a week of price rise and a week of shrinking exclusive-use inventory.
Exclusive-use blocks for rotating crews
On a 2-week-on, 2-week-off rotation, block-book the property, not the person. The property stays yours through the whole campaign; the beds cycle. That's the only way to guarantee the same crew comes back to the same house.
Back-to-back cleans and linen
Pre-arrange changeover cleans and linen with the supplier before mobilisation. On a fast turnaround you don't want to be negotiating housekeeping on a Sunday afternoon between crews.
Contingency stock
Hold a small contingency — one extra bed per 15 booked — for scope creep, extended shifts and the inevitable extra specialist added in week two.