Jer was the 5200 flexible enough? Our dinghy expands and contracts quite a bit as air temperature and pressure in the tubes cycle from night to day.
Need to glue back handles and a bit of the rub rail. Told it would be best to take it out of the water and placed in a shady place for 24h while glue sets. Know 5200 sets very quickly in the tropics. (Sometimes too quickly 😟). Where are you? Just latitude would suffice. Tx.
As mentioned above, prep is the key and we go to the extent to wear latex gloves so we don't have any contamination on the surfaces to be glued.
We use Epoxy.com Product #303 and have been getting more than 3 years of service before we must reglue on our lifting tangs. These tangs hold the 250# Zodiac with motor, even underway on Caribbean channel crossings in Christmas winds, as well as every single night of the year. That's tough service, so I'm very happy with the 3 years or more. Originally, I had them done professionally and that glue job only lasted a year.
The last time I had to patch the dinghy, I used a two-part glue called Tip Top. Made in Germany if I remember. Prep is the most important part. I also attached some chafe protection patches with 5200. I takes days to cure properly but does appear to stick well.