The success of an affiliate marketing strategy depends on how many referrals you’re able to send to merchant sites and how well these referrals convert (hence the bolding of these factors above). The more relevant and appealing the offers you highlight on your site, the higher both your click and conversion rates will likely be. If you’re running a travel blog, you probably don’t want to be featuring affiliate offers for baby products; replacing them with affiliate links to cruise packages would probably result in a higher referral rate.
As an affiliate for Boatbookings, you will receive 20% of their revenue - effectively meaning your commission will be about 4% of any sales from your referrals. You also receive 10% of any commissions Boatbookings make on repeat customers who were your referrals. They do have a minimum charter value of 3,000 ($/€/£/etc) before commissions are earned.