Denise,
The high tech industries has been using such 'advanced' adhesive methods and advanced techniques for the past 20+ years for the repair and joining of such low surface energy polymers, such as UHMWPE, PTFE, ECTFE, etc. etc. .... and it will probably take another 20 years before the 'boating industry' even becomes aware.
Its better not to argue with 'experts'.