Author
Berend Olthof
Sales executive at Let's Book, after four years at Sloepdelen, from the dock to the office. The articles are about getting more out of the boats you have: prices, add-ons, discount codes and social media.
From the dock to sales
In 2022 I started on the dock at Sloepdelen in Amsterdam: handing out boats, welcoming customers, and tying everything up again at the end of the day. In the same years I had BT Online, a small company that helped business owners with their social media and their website. So the social media tips in my articles are ones I tried out myself.
Later I moved to the Sloepdelen office: business customers and private ones, organizing events, and keeping the books. I also trained new colleagues, guided the dock crew and hired new staff. Four summers of seeing how a rental company really runs, and where your time goes as an operator.
In those same years I studied nautical business management at the IVA Business School in Driebergen. My graduation internship was at Sloepdelen, with a study inside the company.
Since the summer of 2026 I work in sales at Let's Book. I guide rental companies, tour operators and charters from the first contact to the day they go live. And what I write here, as the dock sheriff, about prices, add-ons and discount codes comes from those four summers, and from the operators I talk with.
Articles by Berend Olthof
7 articles on getting more out of the boats you have.

Utilization rate: the most important number in your boat rental
How often do your boats sit at the dock? How to work out your utilization rate per boat and per month, with a worked example and your break-even point.

How to extend your boat rental season
A longer season costs less than an extra boat. Five ways to open earlier and close later with the boats you already have, and how to set it up.

Advantages of boat rental automation
What automation actually changes in a boat rental business: the bookings, the payments, the maintenance, the messages and the numbers.

Pricing models for your boat rental, fixed or flexible
Fixed or flexible prices for your boat rental? What each one does for your revenue and your customers, and why we advise you to start simple.

How to use discount codes at a boat rental
Discount codes for a boat rental: fill quiet weekdays, bring past customers back and see which ad works, without giving away your busiest Saturdays.

Add-ons that sell well at a boat rental
Add-ons for a boat rental: a skipper, drinks, a SUP board, a picnic basket. Which extras sell, and how they earn more on the boats you already have.

Social media for your boat rental: 10 tips to start
Ten social media tips for a boat rental: which platform to pick, what to film, how to share your customers' photos and how to see which posts bring bookings.
Iwan, Berend and Robbe, our support team
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