Indmar recommends the following
1. For the first hour, do not exceed 2000 RPM; vary RPM continuously.
2. For the second hour, do not exceed 3000 RPM;
3. For the next five hours, do not exceed 4000 RPM.After the first ten hours of operation, take your boat to the dealer for its first engine and transmission oil and filter change and engine checkup.
There are differences between the manufactures concentrate on the rmp break in and follow the procedures for warrenty purposes. To me it's a small price to pay for avoiding engine problems in the future.