Re: Ruined week-end
I don't have pictures but here are some thoughts:
1. The bow strap is not only used to pull and keep the boat forward against the bow roller/stop, but to help keep the boat from going forward in the event of a sudden stop (crash). As such it should go under the roller not over it.
2. Straps on the stern are used to keep the boat on the trailer. Remember that you are securing the boat not for normal towing but for abnormal conditions. Sudden stops and crashes.
3. A safety chain is a really good idea to backup the bow strap. Under crash conditions the forces on that bow strap get really big (see picture above with broken strap)
4. If you are new to boating it is probably a good idea to get your boat/trailer weighted. Weight is very misleading. Tendency is to use the dry weight of the boat as specified by the manufacturer. Reality is that you take that as a starting point. Add trailer, gas and any other fluids, life jackets, cooler, etc., and you get a really different weight.