All Brinly Models (except the AS2-40BH-G, and AS2-40BH-S) come with a weight tray for adding extra weight. None of the Brinly units come with straps to hold your weight. However, proper securing of weight is required for safe operation. Since the weight used by customers varies in shape and size we defer to the customer's best judgement on affixing tie downs to the unit. Please make sure that any added weight is firmly secured and does not exceed the weight guidelines put forth in the manual. To aid in the securing of weight brinly has added extra tie down holes for this purpose. Brinly recommends only using weight that is secured and not able to shift during operation. As uneven weight can cause the unit to shift or event capsize. Uneven weight may also bend or damage the spikes or spoons.