Wont Start in HOT sun after sitting an hour
 

This has happened several times now...
My BF115 HP ran perfectly to get to your fishing spot 20-30 min, sit for an hour or so in the HOT sun and then doesnt want to start? Mine has been doing that. I am wondering if something to do with vapor lock. Two trips ago it did this (sitting in hot sun for an hour after running perfectly) I got another boat to start pulling me in and 2 min into moving I tried it again and it cranked right up. This time (today) I ran it for 20-30 min up and down the river then anchored down for an hour or so and then wouldnt start again. Would turn over and turn over and turn over. I vented the gas tank, pumped the gas bulb, still nothing, I started paddling out 15-20 min trying the motor again here and there and it finally started again and ran perfectly again. I think it has to do with the HOT fuel or something related.
Anyone have some ideas?