Best 2 stroke under 200lbs

Hello, New here and looking into building a 2 stroke outboard for my Inflatable Jet boat. Currently eyeing up a 2002 mercury 40 with 50hp carbs but before I pull the trigger I figured I'd get some feedback from the pros here. Looking to squeeze the most power out while still maintaining some degree of reliability. Yes it will have to have a jet as this boat is running skinny water and fast rapids. Id love to hear your opinions on what would you would recommend for performance and reliability as some trips are 50 miles into the wilderness with zero access. Right now it has a brand new 25hp merc jet 4 stroke and well it just aint cutting it. Thank you and I look forward to your responses.

If you're strict on the weight requirement, yamaha 50 is going to be your best bet. But that 40 merc can be tuned up to 90 hp and still pretty reliable. I'm not sure what the jet weights but an all manual short shaft 40 merc is 206 lbs.