I had the plastic plate with the zip ties, hated it...and on the Achilles there is no good way to attach the plate and I didn't want to glue the mounts on, pkus the plate is really not proper way to mount, see below.
Midlife, after spending a few thousand for the dink, motor, lift, whats another $40 +-
Actually though if you add up a reg plate, vinyl letters, etc, you're close to $40 anyway
I would add that its proper to have them permantley attahced.
The following is an exerpt from an Official Newsletter distributed by the head of the Vessel Examination Dept of the USCG Auxiliary. STATE REGISTERED VESSELS -- The Requirements Are: Use of Block Style letters and numbers only; Letters & numbers must be at least Three (3) inches in height; Letters & numbers must be of Contrasting Color (not outlined, shadowed or rounded); if the background is multicolored or patterned, a block out area of a single color may be required to facilitate readability. The Letters and numbers must be separated by the width of one letter or number - not including the number one (1) or the capital letter (I). Use either a blank space or a hyphen and they must be read from left to right. The validation sticker must be visible and placed within six inches of the registration numbers. Placement either in front of or behind the numbers is determined by state regulation. The Registration Numbers, Letters and Sticker must be PERMANENTLY ATTACHED and on the Forward Half of the Vessel. Adhering registration numbers and stickers on glass or plastic windows or using placards (signboards) are NOT considered Permanent and can no longer be used unless they are bolted or screwed in place on the hull or superstructure (including on dinghies). Signboards cannot be attached to railings. Inflatable boat manufacturers should be contacted for letters and numbers made of the same material / adhesive as the boat to attain permanency. Validation stickers issued by states can be adhered to metal or plastic plates and mounted on grab straps with non-reversible wire ties, but must be within 6 inches of the registration number and visible to law enforcement officers. Contact your state for guidance and acceptability. Above reviewed by the United States Coast Guard office of Boating Safety on: 12/16/04 -----I would contact your local jurisdiction and Coast Guard Auxiliary to learn the rules of the water-----