Rights for boats and combinations

[elhaard]

It should be possible to add rights to boats.
E.g. Hu can only be rowed by Kaproer.

Also, some combinations are not covered by the present rights system.
E.g: For Inriggers, all rowers must have Rowing Right, except on an Instruction trip.
For Kayaks, all rowers must have Kayak Right, except on an Instruction trip.

Perhaps you could have a "gives" or "negates" relation on rights? E.g. Triptype "Instruction" gives "Rowing right" to all rowers.

[emilchristiansen]

+1
Very needed during instruction