Items
There were four people in each sailboat, together. Not ALL together... This "word riddle" would have been easier if there had been proper punctuation.
Sailboat is your head Sailboat is your headSailboat is your head
When it is being overtaken
A sailboat will have positive buoyancy if the weight of the boat is less than the weight of the water it takes the place of. The weight of the water that is being occupied by the hull is displacement.
Ease back on the throttle to reduce the wake of your boat - until the sailboat has overtaken, and has put some distance between you.
Sailboat racing
Sailboat is a noun.
What is likely to be an order of concrete carried by a truck to make a garage floor
Yes, sailboat is a compound word. (sail + boat = sailboat)
If you are riding a horse that is out of control, then it means that you are being carried away by your passions. If the horse tramples you, the passion is likely dashed.
Wind powers a sailboat.