We hired boats from Aspa for many years before we bought our own boat for Exmouth. There are different sizes available that can cater for all your needs from cruising around the canals and gulf all the way to offshore blue marlin fishing. A vehicle with a 3500kg towing capacity will be required for the large boats. Ensuring you also comply with your towing vehicle maximum GVM would be worthwhile. There is the option to hire a smaller boat or a boat with a towing vehicle if available. If your vehicle doesn't have a trailer breaking system, i.e. Redarc it's not a problem as they can provide a portable braking system with their boats. Lastly, for a trailer breaking system to work on boat trailers, there should be power to your trailer plug (normally on pin 2) to power the hydraulic braking system.